Home / 558,639.12-770,939.44-316,931.88

Finding the Fourth Proportional to 558,639.12, 770,939.44 and 316,931.88

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Solution

The fourth proportional to 558,639.12, 770,939.44 and 316,931.88 is: 437,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,639.12 : 770,939.44 = 316,931.88 : x
  2. Step 2: Convert to fraction form
    558,639.12/770,939.44 = 316,931.88/x
  3. Step 3: Cross multiply
    558,639.12x = 770,939.44 × 316,931.88
  4. Step 4: Simplify right side
    558,639.12x = 244,335,286,085.35
  5. Step 5: Solve for x
    x = 244,335,286,085.35/558,639.12
  6. Step 6: Final answer
    x = 437,375.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.