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Finding the Fourth Proportional to 545,909.80, 818,864.70 and 457,336.30

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Solution

The fourth proportional to 545,909.80, 818,864.70 and 457,336.30 is: 686,004.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,909.80 : 818,864.70 = 457,336.30 : x
  2. Step 2: Convert to fraction form
    545,909.80/818,864.70 = 457,336.30/x
  3. Step 3: Cross multiply
    545,909.80x = 818,864.70 × 457,336.30
  4. Step 4: Simplify right side
    545,909.80x = 374,496,552,098.61
  5. Step 5: Solve for x
    x = 374,496,552,098.61/545,909.80
  6. Step 6: Final answer
    x = 686,004.45

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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.