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Finding the Fourth Proportional to 498,827.70, 748,241.55 and 339,395.40

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Solution

The fourth proportional to 498,827.70, 748,241.55 and 339,395.40 is: 509,093.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,827.70 : 748,241.55 = 339,395.40 : x
  2. Step 2: Convert to fraction form
    498,827.70/748,241.55 = 339,395.40/x
  3. Step 3: Cross multiply
    498,827.70x = 748,241.55 × 339,395.40
  4. Step 4: Simplify right side
    498,827.70x = 253,949,740,158.87
  5. Step 5: Solve for x
    x = 253,949,740,158.87/498,827.70
  6. Step 6: Final answer
    x = 509,093.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.