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Finding the Fourth Proportional to 558,188.46, 770,276.82 and 316,487.40

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Solution

The fourth proportional to 558,188.46, 770,276.82 and 316,487.40 is: 436,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,188.46 : 770,276.82 = 316,487.40 : x
  2. Step 2: Convert to fraction form
    558,188.46/770,276.82 = 316,487.40/x
  3. Step 3: Cross multiply
    558,188.46x = 770,276.82 × 316,487.40
  4. Step 4: Simplify right side
    558,188.46x = 243,782,908,042.07
  5. Step 5: Solve for x
    x = 243,782,908,042.07/558,188.46
  6. Step 6: Final answer
    x = 436,739.43

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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.