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Finding the Fourth Proportional to 672,166.90, 927,655.69 and 502,105.78

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Solution

The fourth proportional to 672,166.90, 927,655.69 and 502,105.78 is: 692,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,166.90 : 927,655.69 = 502,105.78 : x
  2. Step 2: Convert to fraction form
    672,166.90/927,655.69 = 502,105.78/x
  3. Step 3: Cross multiply
    672,166.90x = 927,655.69 × 502,105.78
  4. Step 4: Simplify right side
    672,166.90x = 465,781,283,798.89
  5. Step 5: Solve for x
    x = 465,781,283,798.89/672,166.90
  6. Step 6: Final answer
    x = 692,954.81

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Double scale
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1.5x scale

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.