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Finding the Fourth Proportional to 391,142,163,915.90, 586,713,245,873.85 and 391,142,163,915.90

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Solution

The fourth proportional to 391,142,163,915.90, 586,713,245,873.85 and 391,142,163,915.90 is: 586,713,245,873.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,142,163,915.90 : 586,713,245,873.85 = 391,142,163,915.90 : x
  2. Step 2: Convert to fraction form
    391,142,163,915.90/586,713,245,873.85 = 391,142,163,915.90/x
  3. Step 3: Cross multiply
    391,142,163,915.90x = 586,713,245,873.85 × 391,142,163,915.90
  4. Step 4: Simplify right side
    391,142,163,915.90x = 229,488,288,589,219,197,091,840
  5. Step 5: Solve for x
    x = 229,488,288,589,219,197,091,840/391,142,163,915.90
  6. Step 6: Final answer
    x = 586,713,245,873.85

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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.