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Finding the Fourth Proportional to 646,870, 892,689.24 and 374,957.32

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Solution

The fourth proportional to 646,870, 892,689.24 and 374,957.32 is: 517,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,870 : 892,689.24 = 374,957.32 : x
  2. Step 2: Convert to fraction form
    646,870/892,689.24 = 374,957.32/x
  3. Step 3: Cross multiply
    646,870x = 892,689.24 × 374,957.32
  4. Step 4: Simplify right side
    646,870x = 334,720,365,023.24
  5. Step 5: Solve for x
    x = 334,720,365,023.24/646,870
  6. Step 6: Final answer
    x = 517,446.11

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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.