Home / 648,001.60-972,002.40-514,157.20

Finding the Fourth Proportional to 648,001.60, 972,002.40 and 514,157.20

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Solution

The fourth proportional to 648,001.60, 972,002.40 and 514,157.20 is: 771,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,001.60 : 972,002.40 = 514,157.20 : x
  2. Step 2: Convert to fraction form
    648,001.60/972,002.40 = 514,157.20/x
  3. Step 3: Cross multiply
    648,001.60x = 972,002.40 × 514,157.20
  4. Step 4: Simplify right side
    648,001.60x = 499,762,032,377.28
  5. Step 5: Solve for x
    x = 499,762,032,377.28/648,001.60
  6. Step 6: Final answer
    x = 771,235.80

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Double scale
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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.