Home / 1,386,340.12-2,079,708.30-426,876.76

Finding the Fourth Proportional to 1,386,340.12, 2,079,708.30 and 426,876.76

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Solution

The fourth proportional to 1,386,340.12, 2,079,708.30 and 426,876.76 is: 640,376.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,340.12 : 2,079,708.30 = 426,876.76 : x
  2. Step 2: Convert to fraction form
    1,386,340.12/2,079,708.30 = 426,876.76/x
  3. Step 3: Cross multiply
    1,386,340.12x = 2,079,708.30 × 426,876.76
  4. Step 4: Simplify right side
    1,386,340.12x = 887,779,140,849.11
  5. Step 5: Solve for x
    x = 887,779,140,849.11/1,386,340.12
  6. Step 6: Final answer
    x = 640,376.14

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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.