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Finding the Fourth Proportional to 865,754,344.55, 1,194,708,987.88 and 469,268,821.44

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Solution

The fourth proportional to 865,754,344.55, 1,194,708,987.88 and 469,268,821.44 is: 647,573,624.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,754,344.55 : 1,194,708,987.88 = 469,268,821.44 : x
  2. Step 2: Convert to fraction form
    865,754,344.55/1,194,708,987.88 = 469,268,821.44/x
  3. Step 3: Cross multiply
    865,754,344.55x = 1,194,708,987.88 × 469,268,821.44
  4. Step 4: Simplify right side
    865,754,344.55x = 560,639,678,705,049,728
  5. Step 5: Solve for x
    x = 560,639,678,705,049,728/865,754,344.55
  6. Step 6: Final answer
    x = 647,573,624.36

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1.5x scale

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.