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Finding the Fourth Proportional to 634,280.28, 875,766 and 408,319.44

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Solution

The fourth proportional to 634,280.28, 875,766 and 408,319.44 is: 563,776.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,280.28 : 875,766 = 408,319.44 : x
  2. Step 2: Convert to fraction form
    634,280.28/875,766 = 408,319.44/x
  3. Step 3: Cross multiply
    634,280.28x = 875,766 × 408,319.44
  4. Step 4: Simplify right side
    634,280.28x = 357,592,282,691.04
  5. Step 5: Solve for x
    x = 357,592,282,691.04/634,280.28
  6. Step 6: Final answer
    x = 563,776.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.