Home / 743,947.80-1,115,921.70-478,227.30

Finding the Fourth Proportional to 743,947.80, 1,115,921.70 and 478,227.30

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Solution

The fourth proportional to 743,947.80, 1,115,921.70 and 478,227.30 is: 717,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,947.80 : 1,115,921.70 = 478,227.30 : x
  2. Step 2: Convert to fraction form
    743,947.80/1,115,921.70 = 478,227.30/x
  3. Step 3: Cross multiply
    743,947.80x = 1,115,921.70 × 478,227.30
  4. Step 4: Simplify right side
    743,947.80x = 533,664,221,602.41
  5. Step 5: Solve for x
    x = 533,664,221,602.41/743,947.80
  6. Step 6: Final answer
    x = 717,340.95

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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.