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Finding the Fourth Proportional to 1,180,869.30, 1,768,679.55 and 970,917.30

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Solution

The fourth proportional to 1,180,869.30, 1,768,679.55 and 970,917.30 is: 1,454,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180,869.30 : 1,768,679.55 = 970,917.30 : x
  2. Step 2: Convert to fraction form
    1,180,869.30/1,768,679.55 = 970,917.30/x
  3. Step 3: Cross multiply
    1,180,869.30x = 1,768,679.55 × 970,917.30
  4. Step 4: Simplify right side
    1,180,869.30x = 1,717,241,573,251.22
  5. Step 5: Solve for x
    x = 1,717,241,573,251.22/1,180,869.30
  6. Step 6: Final answer
    x = 1,454,218.15

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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.