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Finding the Fourth Proportional to 637,648.40, 955,422.74 and 445,542.32

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Solution

The fourth proportional to 637,648.40, 955,422.74 and 445,542.32 is: 667,579.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,648.40 : 955,422.74 = 445,542.32 : x
  2. Step 2: Convert to fraction form
    637,648.40/955,422.74 = 445,542.32/x
  3. Step 3: Cross multiply
    637,648.40x = 955,422.74 × 445,542.32
  4. Step 4: Simplify right side
    637,648.40x = 425,681,264,160.36
  5. Step 5: Solve for x
    x = 425,681,264,160.36/637,648.40
  6. Step 6: Final answer
    x = 667,579.91

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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.