Home / 690,674-1,036,159.20-391,298

Finding the Fourth Proportional to 690,674, 1,036,159.20 and 391,298

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Solution

The fourth proportional to 690,674, 1,036,159.20 and 391,298 is: 587,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,674 : 1,036,159.20 = 391,298 : x
  2. Step 2: Convert to fraction form
    690,674/1,036,159.20 = 391,298/x
  3. Step 3: Cross multiply
    690,674x = 1,036,159.20 × 391,298
  4. Step 4: Simplify right side
    690,674x = 405,447,022,641.60
  5. Step 5: Solve for x
    x = 405,447,022,641.60/690,674
  6. Step 6: Final answer
    x = 587,030.96

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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.