Home / 1,123,299,813.60-1,684,949,720.40-511,079,781.60

Finding the Fourth Proportional to 1,123,299,813.60, 1,684,949,720.40 and 511,079,781.60

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Solution

The fourth proportional to 1,123,299,813.60, 1,684,949,720.40 and 511,079,781.60 is: 766,619,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,299,813.60 : 1,684,949,720.40 = 511,079,781.60 : x
  2. Step 2: Convert to fraction form
    1,123,299,813.60/1,684,949,720.40 = 511,079,781.60/x
  3. Step 3: Cross multiply
    1,123,299,813.60x = 1,684,949,720.40 × 511,079,781.60
  4. Step 4: Simplify right side
    1,123,299,813.60x = 861,143,735,109,013,120
  5. Step 5: Solve for x
    x = 861,143,735,109,013,120/1,123,299,813.60
  6. Step 6: Final answer
    x = 766,619,672.40

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.