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Finding the Fourth Proportional to 888,988.80, 1,226,756.16 and 486,503.04

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Solution

The fourth proportional to 888,988.80, 1,226,756.16 and 486,503.04 is: 671,347.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,988.80 : 1,226,756.16 = 486,503.04 : x
  2. Step 2: Convert to fraction form
    888,988.80/1,226,756.16 = 486,503.04/x
  3. Step 3: Cross multiply
    888,988.80x = 1,226,756.16 × 486,503.04
  4. Step 4: Simplify right side
    888,988.80x = 596,820,601,178.73
  5. Step 5: Solve for x
    x = 596,820,601,178.73/888,988.80
  6. Step 6: Final answer
    x = 671,347.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.