Home / 642,787.25-887,055.50-352,426.14

Finding the Fourth Proportional to 642,787.25, 887,055.50 and 352,426.14

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Solution

The fourth proportional to 642,787.25, 887,055.50 and 352,426.14 is: 486,353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,787.25 : 887,055.50 = 352,426.14 : x
  2. Step 2: Convert to fraction form
    642,787.25/887,055.50 = 352,426.14/x
  3. Step 3: Cross multiply
    642,787.25x = 887,055.50 × 352,426.14
  4. Step 4: Simplify right side
    642,787.25x = 312,621,546,711.84
  5. Step 5: Solve for x
    x = 312,621,546,711.84/642,787.25
  6. Step 6: Final answer
    x = 486,353.06

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Double scale
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1.5x scale

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.