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Finding the Fourth Proportional to 1,974,817.60, 2,961,909.60 and 711,995.20

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Solution

The fourth proportional to 1,974,817.60, 2,961,909.60 and 711,995.20 is: 1,067,878.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974,817.60 : 2,961,909.60 = 711,995.20 : x
  2. Step 2: Convert to fraction form
    1,974,817.60/2,961,909.60 = 711,995.20/x
  3. Step 3: Cross multiply
    1,974,817.60x = 2,961,909.60 × 711,995.20
  4. Step 4: Simplify right side
    1,974,817.60x = 2,108,865,418,033.92
  5. Step 5: Solve for x
    x = 2,108,865,418,033.92/1,974,817.60
  6. Step 6: Final answer
    x = 1,067,878.58

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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.