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Finding the Fourth Proportional to 499,991.80, 747,800.70 and 447,066.40

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Solution

The fourth proportional to 499,991.80, 747,800.70 and 447,066.40 is: 668,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,991.80 : 747,800.70 = 447,066.40 : x
  2. Step 2: Convert to fraction form
    499,991.80/747,800.70 = 447,066.40/x
  3. Step 3: Cross multiply
    499,991.80x = 747,800.70 × 447,066.40
  4. Step 4: Simplify right side
    499,991.80x = 334,316,566,866.48
  5. Step 5: Solve for x
    x = 334,316,566,866.48/499,991.80
  6. Step 6: Final answer
    x = 668,644.10

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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.