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Finding the Fourth Proportional to 646,866.20, 892,606.92 and 375,019.40

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Solution

The fourth proportional to 646,866.20, 892,606.92 and 375,019.40 is: 517,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,866.20 : 892,606.92 = 375,019.40 : x
  2. Step 2: Convert to fraction form
    646,866.20/892,606.92 = 375,019.40/x
  3. Step 3: Cross multiply
    646,866.20x = 892,606.92 × 375,019.40
  4. Step 4: Simplify right side
    646,866.20x = 334,744,911,574.25
  5. Step 5: Solve for x
    x = 334,744,911,574.25/646,866.20
  6. Step 6: Final answer
    x = 517,487.10

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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.