Home / 918,085.28-1,377,126.84-319,046.48

Finding the Fourth Proportional to 918,085.28, 1,377,126.84 and 319,046.48

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Solution

The fourth proportional to 918,085.28, 1,377,126.84 and 319,046.48 is: 478,569.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,085.28 : 1,377,126.84 = 319,046.48 : x
  2. Step 2: Convert to fraction form
    918,085.28/1,377,126.84 = 319,046.48/x
  3. Step 3: Cross multiply
    918,085.28x = 1,377,126.84 × 319,046.48
  4. Step 4: Simplify right side
    918,085.28x = 439,367,470,815.52
  5. Step 5: Solve for x
    x = 439,367,470,815.52/918,085.28
  6. Step 6: Final answer
    x = 478,569.34

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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.