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Finding the Fourth Proportional to 689,707.16, 952,233.18 and 472,279.68

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Solution

The fourth proportional to 689,707.16, 952,233.18 and 472,279.68 is: 652,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,707.16 : 952,233.18 = 472,279.68 : x
  2. Step 2: Convert to fraction form
    689,707.16/952,233.18 = 472,279.68/x
  3. Step 3: Cross multiply
    689,707.16x = 952,233.18 × 472,279.68
  4. Step 4: Simplify right side
    689,707.16x = 449,720,381,535.78
  5. Step 5: Solve for x
    x = 449,720,381,535.78/689,707.16
  6. Step 6: Final answer
    x = 652,045.40

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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.