Home / 627,389.79-865,803.20-340,909.92

Finding the Fourth Proportional to 627,389.79, 865,803.20 and 340,909.92

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Solution

The fourth proportional to 627,389.79, 865,803.20 and 340,909.92 is: 470,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,389.79 : 865,803.20 = 340,909.92 : x
  2. Step 2: Convert to fraction form
    627,389.79/865,803.20 = 340,909.92/x
  3. Step 3: Cross multiply
    627,389.79x = 865,803.20 × 340,909.92
  4. Step 4: Simplify right side
    627,389.79x = 295,160,897,943.19
  5. Step 5: Solve for x
    x = 295,160,897,943.19/627,389.79
  6. Step 6: Final answer
    x = 470,458.56

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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.