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Finding the Fourth Proportional to 617,291.47, 851,995.47 and 375,651.90

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Solution

The fourth proportional to 617,291.47, 851,995.47 and 375,651.90 is: 518,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,291.47 : 851,995.47 = 375,651.90 : x
  2. Step 2: Convert to fraction form
    617,291.47/851,995.47 = 375,651.90/x
  3. Step 3: Cross multiply
    617,291.47x = 851,995.47 × 375,651.90
  4. Step 4: Simplify right side
    617,291.47x = 320,053,711,897.79
  5. Step 5: Solve for x
    x = 320,053,711,897.79/617,291.47
  6. Step 6: Final answer
    x = 518,480.70

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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.