Home / 1,078,947.12-1,618,595.88-405,081.36

Finding the Fourth Proportional to 1,078,947.12, 1,618,595.88 and 405,081.36

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Solution

The fourth proportional to 1,078,947.12, 1,618,595.88 and 405,081.36 is: 607,687.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,947.12 : 1,618,595.88 = 405,081.36 : x
  2. Step 2: Convert to fraction form
    1,078,947.12/1,618,595.88 = 405,081.36/x
  3. Step 3: Cross multiply
    1,078,947.12x = 1,618,595.88 × 405,081.36
  4. Step 4: Simplify right side
    1,078,947.12x = 655,663,020,360.80
  5. Step 5: Solve for x
    x = 655,663,020,360.80/1,078,947.12
  6. Step 6: Final answer
    x = 607,687.82

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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.