Home / 1,438,488.57-2,156,016.95-668,947.47

Finding the Fourth Proportional to 1,438,488.57, 2,156,016.95 and 668,947.47

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Solution

The fourth proportional to 1,438,488.57, 2,156,016.95 and 668,947.47 is: 1,002,623.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,488.57 : 2,156,016.95 = 668,947.47 : x
  2. Step 2: Convert to fraction form
    1,438,488.57/2,156,016.95 = 668,947.47/x
  3. Step 3: Cross multiply
    1,438,488.57x = 2,156,016.95 × 668,947.47
  4. Step 4: Simplify right side
    1,438,488.57x = 1,442,262,078,543.57
  5. Step 5: Solve for x
    x = 1,442,262,078,543.57/1,438,488.57
  6. Step 6: Final answer
    x = 1,002,623.25

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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.