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Finding the Fourth Proportional to 646,657.72, 892,387.90 and 374,883.16

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Solution

The fourth proportional to 646,657.72, 892,387.90 and 374,883.16 is: 517,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,657.72 : 892,387.90 = 374,883.16 : x
  2. Step 2: Convert to fraction form
    646,657.72/892,387.90 = 374,883.16/x
  3. Step 3: Cross multiply
    646,657.72x = 892,387.90 × 374,883.16
  4. Step 4: Simplify right side
    646,657.72x = 334,541,195,897.76
  5. Step 5: Solve for x
    x = 334,541,195,897.76/646,657.72
  6. Step 6: Final answer
    x = 517,338.90

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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.