Home / 628,939.28-867,909.13-357,002.24

Finding the Fourth Proportional to 628,939.28, 867,909.13 and 357,002.24

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Solution

The fourth proportional to 628,939.28, 867,909.13 and 357,002.24 is: 492,647.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,939.28 : 867,909.13 = 357,002.24 : x
  2. Step 2: Convert to fraction form
    628,939.28/867,909.13 = 357,002.24/x
  3. Step 3: Cross multiply
    628,939.28x = 867,909.13 × 357,002.24
  4. Step 4: Simplify right side
    628,939.28x = 309,845,498,294.40
  5. Step 5: Solve for x
    x = 309,845,498,294.40/628,939.28
  6. Step 6: Final answer
    x = 492,647.71

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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.