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Finding the Fourth Proportional to 609,520.80, 914,281.20 and 519,319.20

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Solution

The fourth proportional to 609,520.80, 914,281.20 and 519,319.20 is: 778,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,520.80 : 914,281.20 = 519,319.20 : x
  2. Step 2: Convert to fraction form
    609,520.80/914,281.20 = 519,319.20/x
  3. Step 3: Cross multiply
    609,520.80x = 914,281.20 × 519,319.20
  4. Step 4: Simplify right side
    609,520.80x = 474,803,781,359.04
  5. Step 5: Solve for x
    x = 474,803,781,359.04/609,520.80
  6. Step 6: Final answer
    x = 778,978.80

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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.