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Finding the Fourth Proportional to 522,002.40, 783,003.60 and 457,720.80

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Solution

The fourth proportional to 522,002.40, 783,003.60 and 457,720.80 is: 686,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,002.40 : 783,003.60 = 457,720.80 : x
  2. Step 2: Convert to fraction form
    522,002.40/783,003.60 = 457,720.80/x
  3. Step 3: Cross multiply
    522,002.40x = 783,003.60 × 457,720.80
  4. Step 4: Simplify right side
    522,002.40x = 358,397,034,194.88
  5. Step 5: Solve for x
    x = 358,397,034,194.88/522,002.40
  6. Step 6: Final answer
    x = 686,581.20

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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.