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Finding the Fourth Proportional to 637,638.40, 955,407.75 and 445,532.32

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Solution

The fourth proportional to 637,638.40, 955,407.75 and 445,532.32 is: 667,564.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,638.40 : 955,407.75 = 445,532.32 : x
  2. Step 2: Convert to fraction form
    637,638.40/955,407.75 = 445,532.32/x
  3. Step 3: Cross multiply
    637,638.40x = 955,407.75 × 445,532.32
  4. Step 4: Simplify right side
    637,638.40x = 425,665,031,403.48
  5. Step 5: Solve for x
    x = 425,665,031,403.48/637,638.40
  6. Step 6: Final answer
    x = 667,564.93

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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.