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Finding the Fourth Proportional to 487,000.80, 730,501.20 and 353,253.60

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Solution

The fourth proportional to 487,000.80, 730,501.20 and 353,253.60 is: 529,880.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,000.80 : 730,501.20 = 353,253.60 : x
  2. Step 2: Convert to fraction form
    487,000.80/730,501.20 = 353,253.60/x
  3. Step 3: Cross multiply
    487,000.80x = 730,501.20 × 353,253.60
  4. Step 4: Simplify right side
    487,000.80x = 258,052,178,704.32
  5. Step 5: Solve for x
    x = 258,052,178,704.32/487,000.80
  6. Step 6: Final answer
    x = 529,880.40

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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.