Home / 912,998.40-1,369,497.60-439,569.60

Finding the Fourth Proportional to 912,998.40, 1,369,497.60 and 439,569.60

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Solution

The fourth proportional to 912,998.40, 1,369,497.60 and 439,569.60 is: 659,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,998.40 : 1,369,497.60 = 439,569.60 : x
  2. Step 2: Convert to fraction form
    912,998.40/1,369,497.60 = 439,569.60/x
  3. Step 3: Cross multiply
    912,998.40x = 1,369,497.60 × 439,569.60
  4. Step 4: Simplify right side
    912,998.40x = 601,989,512,232.96
  5. Step 5: Solve for x
    x = 601,989,512,232.96/912,998.40
  6. Step 6: Final answer
    x = 659,354.40

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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.