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Finding the Fourth Proportional to 452,819.70, 679,229.55 and 407,718.90

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Solution

The fourth proportional to 452,819.70, 679,229.55 and 407,718.90 is: 611,578.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,819.70 : 679,229.55 = 407,718.90 : x
  2. Step 2: Convert to fraction form
    452,819.70/679,229.55 = 407,718.90/x
  3. Step 3: Cross multiply
    452,819.70x = 679,229.55 × 407,718.90
  4. Step 4: Simplify right side
    452,819.70x = 276,934,724,973.50
  5. Step 5: Solve for x
    x = 276,934,724,973.50/452,819.70
  6. Step 6: Final answer
    x = 611,578.35

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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.