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Finding the Fourth Proportional to 558,074.66, 770,139.16 and 303,425.96

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Solution

The fourth proportional to 558,074.66, 770,139.16 and 303,425.96 is: 418,725.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,074.66 : 770,139.16 = 303,425.96 : x
  2. Step 2: Convert to fraction form
    558,074.66/770,139.16 = 303,425.96/x
  3. Step 3: Cross multiply
    558,074.66x = 770,139.16 × 303,425.96
  4. Step 4: Simplify right side
    558,074.66x = 233,680,209,347.33
  5. Step 5: Solve for x
    x = 233,680,209,347.33/558,074.66
  6. Step 6: Final answer
    x = 418,725.72

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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.