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Finding the Fourth Proportional to 884,398.47, 1,220,474 and 502,446.21

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Solution

The fourth proportional to 884,398.47, 1,220,474 and 502,446.21 is: 693,378.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,398.47 : 1,220,474 = 502,446.21 : x
  2. Step 2: Convert to fraction form
    884,398.47/1,220,474 = 502,446.21/x
  3. Step 3: Cross multiply
    884,398.47x = 1,220,474 × 502,446.21
  4. Step 4: Simplify right side
    884,398.47x = 613,222,535,703.54
  5. Step 5: Solve for x
    x = 613,222,535,703.54/884,398.47
  6. Step 6: Final answer
    x = 693,378.11

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Double scale
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Similar ratio
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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.