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Finding the Fourth Proportional to 478,520.07, 717,782.82 and 123,509.82

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Solution

The fourth proportional to 478,520.07, 717,782.82 and 123,509.82 is: 185,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,520.07 : 717,782.82 = 123,509.82 : x
  2. Step 2: Convert to fraction form
    478,520.07/717,782.82 = 123,509.82/x
  3. Step 3: Cross multiply
    478,520.07x = 717,782.82 × 123,509.82
  4. Step 4: Simplify right side
    478,520.07x = 88,653,226,897.29
  5. Step 5: Solve for x
    x = 88,653,226,897.29/478,520.07
  6. Step 6: Final answer
    x = 185,265.43

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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.