Home / 861,312.34-1,291,968.92-387,444.07

Finding the Fourth Proportional to 861,312.34, 1,291,968.92 and 387,444.07

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Solution

The fourth proportional to 861,312.34, 1,291,968.92 and 387,444.07 is: 581,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,312.34 : 1,291,968.92 = 387,444.07 : x
  2. Step 2: Convert to fraction form
    861,312.34/1,291,968.92 = 387,444.07/x
  3. Step 3: Cross multiply
    861,312.34x = 1,291,968.92 × 387,444.07
  4. Step 4: Simplify right side
    861,312.34x = 500,565,694,741.08
  5. Step 5: Solve for x
    x = 500,565,694,741.08/861,312.34
  6. Step 6: Final answer
    x = 581,166.29

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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.