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Finding the Fourth Proportional to 890,016.38, 1,228,224 and 527,618.32

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Solution

The fourth proportional to 890,016.38, 1,228,224 and 527,618.32 is: 728,114.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,016.38 : 1,228,224 = 527,618.32 : x
  2. Step 2: Convert to fraction form
    890,016.38/1,228,224 = 527,618.32/x
  3. Step 3: Cross multiply
    890,016.38x = 1,228,224 × 527,618.32
  4. Step 4: Simplify right side
    890,016.38x = 648,033,483,463.68
  5. Step 5: Solve for x
    x = 648,033,483,463.68/890,016.38
  6. Step 6: Final answer
    x = 728,114.11

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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.