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Finding the Fourth Proportional to 500,004.80, 747,820.20 and 447,079.40

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Solution

The fourth proportional to 500,004.80, 747,820.20 and 447,079.40 is: 668,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,004.80 : 747,820.20 = 447,079.40 : x
  2. Step 2: Convert to fraction form
    500,004.80/747,820.20 = 447,079.40/x
  3. Step 3: Cross multiply
    500,004.80x = 747,820.20 × 447,079.40
  4. Step 4: Simplify right side
    500,004.80x = 334,335,006,323.88
  5. Step 5: Solve for x
    x = 334,335,006,323.88/500,004.80
  6. Step 6: Final answer
    x = 668,663.59

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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.