Home / 790,815.40-1,185,424.28-311,379.59

Finding the Fourth Proportional to 790,815.40, 1,185,424.28 and 311,379.59

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Solution

The fourth proportional to 790,815.40, 1,185,424.28 and 311,379.59 is: 466,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,815.40 : 1,185,424.28 = 311,379.59 : x
  2. Step 2: Convert to fraction form
    790,815.40/1,185,424.28 = 311,379.59/x
  3. Step 3: Cross multiply
    790,815.40x = 1,185,424.28 × 311,379.59
  4. Step 4: Simplify right side
    790,815.40x = 369,116,918,798.43
  5. Step 5: Solve for x
    x = 369,116,918,798.43/790,815.40
  6. Step 6: Final answer
    x = 466,754.85

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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.