Home / 1,385,273.68-2,078,118.30-486,557

Finding the Fourth Proportional to 1,385,273.68, 2,078,118.30 and 486,557

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Solution

The fourth proportional to 1,385,273.68, 2,078,118.30 and 486,557 is: 729,908.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,273.68 : 2,078,118.30 = 486,557 : x
  2. Step 2: Convert to fraction form
    1,385,273.68/2,078,118.30 = 486,557/x
  3. Step 3: Cross multiply
    1,385,273.68x = 2,078,118.30 × 486,557
  4. Step 4: Simplify right side
    1,385,273.68x = 1,011,123,005,693.10
  5. Step 5: Solve for x
    x = 1,011,123,005,693.10/1,385,273.68
  6. Step 6: Final answer
    x = 729,908.48

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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.