Home / 852,280.92-1,278,089.15-319,511.25

Finding the Fourth Proportional to 852,280.92, 1,278,089.15 and 319,511.25

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Solution

The fourth proportional to 852,280.92, 1,278,089.15 and 319,511.25 is: 479,142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,280.92 : 1,278,089.15 = 319,511.25 : x
  2. Step 2: Convert to fraction form
    852,280.92/1,278,089.15 = 319,511.25/x
  3. Step 3: Cross multiply
    852,280.92x = 1,278,089.15 × 319,511.25
  4. Step 4: Simplify right side
    852,280.92x = 408,363,860,330.38
  5. Step 5: Solve for x
    x = 408,363,860,330.38/852,280.92
  6. Step 6: Final answer
    x = 479,142.32

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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.