Home / 498,279.18-687,641.28-283,413.72

Finding the Fourth Proportional to 498,279.18, 687,641.28 and 283,413.72

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Solution

The fourth proportional to 498,279.18, 687,641.28 and 283,413.72 is: 391,120.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,279.18 : 687,641.28 = 283,413.72 : x
  2. Step 2: Convert to fraction form
    498,279.18/687,641.28 = 283,413.72/x
  3. Step 3: Cross multiply
    498,279.18x = 687,641.28 × 283,413.72
  4. Step 4: Simplify right side
    498,279.18x = 194,886,973,190.36
  5. Step 5: Solve for x
    x = 194,886,973,190.36/498,279.18
  6. Step 6: Final answer
    x = 391,120.04

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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.