Home / 390,650.12-585,781.26-124,376

Finding the Fourth Proportional to 390,650.12, 585,781.26 and 124,376

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Solution

The fourth proportional to 390,650.12, 585,781.26 and 124,376 is: 186,502.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,650.12 : 585,781.26 = 124,376 : x
  2. Step 2: Convert to fraction form
    390,650.12/585,781.26 = 124,376/x
  3. Step 3: Cross multiply
    390,650.12x = 585,781.26 × 124,376
  4. Step 4: Simplify right side
    390,650.12x = 72,857,129,993.76
  5. Step 5: Solve for x
    x = 72,857,129,993.76/390,650.12
  6. Step 6: Final answer
    x = 186,502.26

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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.