Home / 761,422.92-1,142,135.80-312,063.42

Finding the Fourth Proportional to 761,422.92, 1,142,135.80 and 312,063.42

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Solution

The fourth proportional to 761,422.92, 1,142,135.80 and 312,063.42 is: 468,095.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,422.92 : 1,142,135.80 = 312,063.42 : x
  2. Step 2: Convert to fraction form
    761,422.92/1,142,135.80 = 312,063.42/x
  3. Step 3: Cross multiply
    761,422.92x = 1,142,135.80 × 312,063.42
  4. Step 4: Simplify right side
    761,422.92x = 356,418,803,852.44
  5. Step 5: Solve for x
    x = 356,418,803,852.44/761,422.92
  6. Step 6: Final answer
    x = 468,095.71

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Double scale
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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.