Home / 2,121,006.60-3,179,624.04-772,915.68

Finding the Fourth Proportional to 2,121,006.60, 3,179,624.04 and 772,915.68

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Solution

The fourth proportional to 2,121,006.60, 3,179,624.04 and 772,915.68 is: 1,158,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,006.60 : 3,179,624.04 = 772,915.68 : x
  2. Step 2: Convert to fraction form
    2,121,006.60/3,179,624.04 = 772,915.68/x
  3. Step 3: Cross multiply
    2,121,006.60x = 3,179,624.04 × 772,915.68
  4. Step 4: Simplify right side
    2,121,006.60x = 2,457,581,277,020.95
  5. Step 5: Solve for x
    x = 2,457,581,277,020.95/2,121,006.60
  6. Step 6: Final answer
    x = 1,158,686.29

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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.