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Finding the Fourth Proportional to 572,407.60, 857,920.20 and 291,780.40

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Solution

The fourth proportional to 572,407.60, 857,920.20 and 291,780.40 is: 437,318.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,407.60 : 857,920.20 = 291,780.40 : x
  2. Step 2: Convert to fraction form
    572,407.60/857,920.20 = 291,780.40/x
  3. Step 3: Cross multiply
    572,407.60x = 857,920.20 × 291,780.40
  4. Step 4: Simplify right side
    572,407.60x = 250,324,299,124.08
  5. Step 5: Solve for x
    x = 250,324,299,124.08/572,407.60
  6. Step 6: Final answer
    x = 437,318.27

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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.