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Finding the Fourth Proportional to 441,109.10, 661,663.65 and 402,401.90

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Solution

The fourth proportional to 441,109.10, 661,663.65 and 402,401.90 is: 603,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,109.10 : 661,663.65 = 402,401.90 : x
  2. Step 2: Convert to fraction form
    441,109.10/661,663.65 = 402,401.90/x
  3. Step 3: Cross multiply
    441,109.10x = 661,663.65 × 402,401.90
  4. Step 4: Simplify right side
    441,109.10x = 266,254,709,920.94
  5. Step 5: Solve for x
    x = 266,254,709,920.94/441,109.10
  6. Step 6: Final answer
    x = 603,602.85

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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.