Home / 1,027,139.18-1,541,245.95-420,377.90

Finding the Fourth Proportional to 1,027,139.18, 1,541,245.95 and 420,377.90

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Solution

The fourth proportional to 1,027,139.18, 1,541,245.95 and 420,377.90 is: 630,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027,139.18 : 1,541,245.95 = 420,377.90 : x
  2. Step 2: Convert to fraction form
    1,027,139.18/1,541,245.95 = 420,377.90/x
  3. Step 3: Cross multiply
    1,027,139.18x = 1,541,245.95 × 420,377.90
  4. Step 4: Simplify right side
    1,027,139.18x = 647,905,735,844.51
  5. Step 5: Solve for x
    x = 647,905,735,844.51/1,027,139.18
  6. Step 6: Final answer
    x = 630,786.70

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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.