Home / 498,271.20-746,629.20-431,397.60

Finding the Fourth Proportional to 498,271.20, 746,629.20 and 431,397.60

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Solution

The fourth proportional to 498,271.20, 746,629.20 and 431,397.60 is: 646,423.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,271.20 : 746,629.20 = 431,397.60 : x
  2. Step 2: Convert to fraction form
    498,271.20/746,629.20 = 431,397.60/x
  3. Step 3: Cross multiply
    498,271.20x = 746,629.20 × 431,397.60
  4. Step 4: Simplify right side
    498,271.20x = 322,094,044,969.92
  5. Step 5: Solve for x
    x = 322,094,044,969.92/498,271.20
  6. Step 6: Final answer
    x = 646,423.16

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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.