Home / 627,079.68-865,374.48-340,599.78

Finding the Fourth Proportional to 627,079.68, 865,374.48 and 340,599.78

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Solution

The fourth proportional to 627,079.68, 865,374.48 and 340,599.78 is: 470,030.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,079.68 : 865,374.48 = 340,599.78 : x
  2. Step 2: Convert to fraction form
    627,079.68/865,374.48 = 340,599.78/x
  3. Step 3: Cross multiply
    627,079.68x = 865,374.48 × 340,599.78
  4. Step 4: Simplify right side
    627,079.68x = 294,746,357,505.61
  5. Step 5: Solve for x
    x = 294,746,357,505.61/627,079.68
  6. Step 6: Final answer
    x = 470,030.15

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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.