Home / 687,899.88-1,031,470.92-368,426.16

Finding the Fourth Proportional to 687,899.88, 1,031,470.92 and 368,426.16

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Solution

The fourth proportional to 687,899.88, 1,031,470.92 and 368,426.16 is: 552,436.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,899.88 : 1,031,470.92 = 368,426.16 : x
  2. Step 2: Convert to fraction form
    687,899.88/1,031,470.92 = 368,426.16/x
  3. Step 3: Cross multiply
    687,899.88x = 1,031,470.92 × 368,426.16
  4. Step 4: Simplify right side
    687,899.88x = 380,020,870,207.27
  5. Step 5: Solve for x
    x = 380,020,870,207.27/687,899.88
  6. Step 6: Final answer
    x = 552,436.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.