Home / 761,279.76-1,141,854.84-311,872.32

Finding the Fourth Proportional to 761,279.76, 1,141,854.84 and 311,872.32

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Solution

The fourth proportional to 761,279.76, 1,141,854.84 and 311,872.32 is: 467,781.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,279.76 : 1,141,854.84 = 311,872.32 : x
  2. Step 2: Convert to fraction form
    761,279.76/1,141,854.84 = 311,872.32/x
  3. Step 3: Cross multiply
    761,279.76x = 1,141,854.84 × 311,872.32
  4. Step 4: Simplify right side
    761,279.76x = 356,112,918,054.03
  5. Step 5: Solve for x
    x = 356,112,918,054.03/761,279.76
  6. Step 6: Final answer
    x = 467,781.93

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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.