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Finding the Fourth Proportional to 961,820.80, 1,440,762.90 and 488,772.70

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Solution

The fourth proportional to 961,820.80, 1,440,762.90 and 488,772.70 is: 732,158.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,820.80 : 1,440,762.90 = 488,772.70 : x
  2. Step 2: Convert to fraction form
    961,820.80/1,440,762.90 = 488,772.70/x
  3. Step 3: Cross multiply
    961,820.80x = 1,440,762.90 × 488,772.70
  4. Step 4: Simplify right side
    961,820.80x = 704,205,572,692.83
  5. Step 5: Solve for x
    x = 704,205,572,692.83/961,820.80
  6. Step 6: Final answer
    x = 732,158.81

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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.