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Finding the Fourth Proportional to 890,406,008.60, 1,247,417,758.60 and 890,406,008.60

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Solution

The fourth proportional to 890,406,008.60, 1,247,417,758.60 and 890,406,008.60 is: 1,247,417,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,406,008.60 : 1,247,417,758.60 = 890,406,008.60 : x
  2. Step 2: Convert to fraction form
    890,406,008.60/1,247,417,758.60 = 890,406,008.60/x
  3. Step 3: Cross multiply
    890,406,008.60x = 1,247,417,758.60 × 890,406,008.60
  4. Step 4: Simplify right side
    890,406,008.60x = 1,110,708,267,491,784,320
  5. Step 5: Solve for x
    x = 1,110,708,267,491,784,320/890,406,008.60
  6. Step 6: Final answer
    x = 1,247,417,758.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.