Home / 1,260,080,409.60-1,890,120,614.40-816,220,886.40

Finding the Fourth Proportional to 1,260,080,409.60, 1,890,120,614.40 and 816,220,886.40

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Solution

The fourth proportional to 1,260,080,409.60, 1,890,120,614.40 and 816,220,886.40 is: 1,224,331,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,080,409.60 : 1,890,120,614.40 = 816,220,886.40 : x
  2. Step 2: Convert to fraction form
    1,260,080,409.60/1,890,120,614.40 = 816,220,886.40/x
  3. Step 3: Cross multiply
    1,260,080,409.60x = 1,890,120,614.40 × 816,220,886.40
  4. Step 4: Simplify right side
    1,260,080,409.60x = 1,542,755,923,288,480,512
  5. Step 5: Solve for x
    x = 1,542,755,923,288,480,512/1,260,080,409.60
  6. Step 6: Final answer
    x = 1,224,331,329.60

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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.