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Finding the Fourth Proportional to 545,151.70, 817,727.55 and 520,657.30

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Solution

The fourth proportional to 545,151.70, 817,727.55 and 520,657.30 is: 780,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,151.70 : 817,727.55 = 520,657.30 : x
  2. Step 2: Convert to fraction form
    545,151.70/817,727.55 = 520,657.30/x
  3. Step 3: Cross multiply
    545,151.70x = 817,727.55 × 520,657.30
  4. Step 4: Simplify right side
    545,151.70x = 425,755,818,318.62
  5. Step 5: Solve for x
    x = 425,755,818,318.62/545,151.70
  6. Step 6: Final answer
    x = 780,985.95

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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.