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Finding the Fourth Proportional to 465,713.20, 698,569.80 and 306,280.90

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Solution

The fourth proportional to 465,713.20, 698,569.80 and 306,280.90 is: 459,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,713.20 : 698,569.80 = 306,280.90 : x
  2. Step 2: Convert to fraction form
    465,713.20/698,569.80 = 306,280.90/x
  3. Step 3: Cross multiply
    465,713.20x = 698,569.80 × 306,280.90
  4. Step 4: Simplify right side
    465,713.20x = 213,958,587,056.82
  5. Step 5: Solve for x
    x = 213,958,587,056.82/465,713.20
  6. Step 6: Final answer
    x = 459,421.35

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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.