Home / 1,987,008.30-2,980,512.45-724,671.90

Finding the Fourth Proportional to 1,987,008.30, 2,980,512.45 and 724,671.90

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Solution

The fourth proportional to 1,987,008.30, 2,980,512.45 and 724,671.90 is: 1,087,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,008.30 : 2,980,512.45 = 724,671.90 : x
  2. Step 2: Convert to fraction form
    1,987,008.30/2,980,512.45 = 724,671.90/x
  3. Step 3: Cross multiply
    1,987,008.30x = 2,980,512.45 × 724,671.90
  4. Step 4: Simplify right side
    1,987,008.30x = 2,159,893,620,115.16
  5. Step 5: Solve for x
    x = 2,159,893,620,115.16/1,987,008.30
  6. Step 6: Final answer
    x = 1,087,007.85

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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.