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Finding the Fourth Proportional to 558,187.98, 770,276.15 and 316,486.90

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Solution

The fourth proportional to 558,187.98, 770,276.15 and 316,486.90 is: 436,738.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,187.98 : 770,276.15 = 316,486.90 : x
  2. Step 2: Convert to fraction form
    558,187.98/770,276.15 = 316,486.90/x
  3. Step 3: Cross multiply
    558,187.98x = 770,276.15 × 316,486.90
  4. Step 4: Simplify right side
    558,187.98x = 243,782,309,275.00
  5. Step 5: Solve for x
    x = 243,782,309,275.00/558,187.98
  6. Step 6: Final answer
    x = 436,738.73

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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.