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Finding the Fourth Proportional to 916,649, 1,375,010.76 and 436,630.04

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Solution

The fourth proportional to 916,649, 1,375,010.76 and 436,630.04 is: 654,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,649 : 1,375,010.76 = 436,630.04 : x
  2. Step 2: Convert to fraction form
    916,649/1,375,010.76 = 436,630.04/x
  3. Step 3: Cross multiply
    916,649x = 1,375,010.76 × 436,630.04
  4. Step 4: Simplify right side
    916,649x = 600,371,003,139.23
  5. Step 5: Solve for x
    x = 600,371,003,139.23/916,649
  6. Step 6: Final answer
    x = 654,962.81

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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.