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Finding the Fourth Proportional to 559,876,986.80, 839,815,480.20 and 442,975,713.20

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Solution

The fourth proportional to 559,876,986.80, 839,815,480.20 and 442,975,713.20 is: 664,463,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,876,986.80 : 839,815,480.20 = 442,975,713.20 : x
  2. Step 2: Convert to fraction form
    559,876,986.80/839,815,480.20 = 442,975,713.20/x
  3. Step 3: Cross multiply
    559,876,986.80x = 839,815,480.20 × 442,975,713.20
  4. Step 4: Simplify right side
    559,876,986.80x = 372,017,861,297,995,520
  5. Step 5: Solve for x
    x = 372,017,861,297,995,520/559,876,986.80
  6. Step 6: Final answer
    x = 664,463,569.80

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1.5x scale

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.