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Finding the Fourth Proportional to 545,203.70, 817,805.55 and 520,709.30

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Solution

The fourth proportional to 545,203.70, 817,805.55 and 520,709.30 is: 781,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,203.70 : 817,805.55 = 520,709.30 : x
  2. Step 2: Convert to fraction form
    545,203.70/817,805.55 = 520,709.30/x
  3. Step 3: Cross multiply
    545,203.70x = 817,805.55 × 520,709.30
  4. Step 4: Simplify right side
    545,203.70x = 425,838,955,476.62
  5. Step 5: Solve for x
    x = 425,838,955,476.62/545,203.70
  6. Step 6: Final answer
    x = 781,063.95

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Similar ratio
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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.