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Finding the Fourth Proportional to 637,648.64, 955,652.48 and 321,397.76

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Solution

The fourth proportional to 637,648.64, 955,652.48 and 321,397.76 is: 481,683.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,648.64 : 955,652.48 = 321,397.76 : x
  2. Step 2: Convert to fraction form
    637,648.64/955,652.48 = 321,397.76/x
  3. Step 3: Cross multiply
    637,648.64x = 955,652.48 × 321,397.76
  4. Step 4: Simplify right side
    637,648.64x = 307,144,566,410.45
  5. Step 5: Solve for x
    x = 307,144,566,410.45/637,648.64
  6. Step 6: Final answer
    x = 481,683.09

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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.