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Finding the Fourth Proportional to 497,720.40, 746,580.60 and 123,743.40

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Solution

The fourth proportional to 497,720.40, 746,580.60 and 123,743.40 is: 185,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,720.40 : 746,580.60 = 123,743.40 : x
  2. Step 2: Convert to fraction form
    497,720.40/746,580.60 = 123,743.40/x
  3. Step 3: Cross multiply
    497,720.40x = 746,580.60 × 123,743.40
  4. Step 4: Simplify right side
    497,720.40x = 92,384,421,818.04
  5. Step 5: Solve for x
    x = 92,384,421,818.04/497,720.40
  6. Step 6: Final answer
    x = 185,615.10

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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.