Home / 612,479.38-918,905.56-313,170.20

Finding the Fourth Proportional to 612,479.38, 918,905.56 and 313,170.20

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Solution

The fourth proportional to 612,479.38, 918,905.56 and 313,170.20 is: 469,850.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,479.38 : 918,905.56 = 313,170.20 : x
  2. Step 2: Convert to fraction form
    612,479.38/918,905.56 = 313,170.20/x
  3. Step 3: Cross multiply
    612,479.38x = 918,905.56 × 313,170.20
  4. Step 4: Simplify right side
    612,479.38x = 287,773,838,006.31
  5. Step 5: Solve for x
    x = 287,773,838,006.31/612,479.38
  6. Step 6: Final answer
    x = 469,850.66

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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.