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Finding the Fourth Proportional to 498,168.60, 687,487.88 and 283,339.60

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Solution

The fourth proportional to 498,168.60, 687,487.88 and 283,339.60 is: 391,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,168.60 : 687,487.88 = 283,339.60 : x
  2. Step 2: Convert to fraction form
    498,168.60/687,487.88 = 283,339.60/x
  3. Step 3: Cross multiply
    498,168.60x = 687,487.88 × 283,339.60
  4. Step 4: Simplify right side
    498,168.60x = 194,792,540,924.05
  5. Step 5: Solve for x
    x = 194,792,540,924.05/498,168.60
  6. Step 6: Final answer
    x = 391,017.30

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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.