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Finding the Fourth Proportional to 506,819.04, 699,407.28 and 291,878.88

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Solution

The fourth proportional to 506,819.04, 699,407.28 and 291,878.88 is: 402,791.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,819.04 : 699,407.28 = 291,878.88 : x
  2. Step 2: Convert to fraction form
    506,819.04/699,407.28 = 291,878.88/x
  3. Step 3: Cross multiply
    506,819.04x = 699,407.28 × 291,878.88
  4. Step 4: Simplify right side
    506,819.04x = 204,142,213,550.25
  5. Step 5: Solve for x
    x = 204,142,213,550.25/506,819.04
  6. Step 6: Final answer
    x = 402,791.13

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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.