Home / 662,907.28-914,782.50-387,290.70

Finding the Fourth Proportional to 662,907.28, 914,782.50 and 387,290.70

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Solution

The fourth proportional to 662,907.28, 914,782.50 and 387,290.70 is: 534,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,907.28 : 914,782.50 = 387,290.70 : x
  2. Step 2: Convert to fraction form
    662,907.28/914,782.50 = 387,290.70/x
  3. Step 3: Cross multiply
    662,907.28x = 914,782.50 × 387,290.70
  4. Step 4: Simplify right side
    662,907.28x = 354,286,754,772.75
  5. Step 5: Solve for x
    x = 354,286,754,772.75/662,907.28
  6. Step 6: Final answer
    x = 534,443.90

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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.