Home / 515,947.20-773,920.80-495,280.05

Finding the Fourth Proportional to 515,947.20, 773,920.80 and 495,280.05

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Solution

The fourth proportional to 515,947.20, 773,920.80 and 495,280.05 is: 742,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,947.20 : 773,920.80 = 495,280.05 : x
  2. Step 2: Convert to fraction form
    515,947.20/773,920.80 = 495,280.05/x
  3. Step 3: Cross multiply
    515,947.20x = 773,920.80 × 495,280.05
  4. Step 4: Simplify right side
    515,947.20x = 383,307,532,520.04
  5. Step 5: Solve for x
    x = 383,307,532,520.04/515,947.20
  6. Step 6: Final answer
    x = 742,920.08

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Similar ratio
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1.5x scale

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.