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Finding the Fourth Proportional to 558,671.66, 770,984.38 and 316,964.42

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Solution

The fourth proportional to 558,671.66, 770,984.38 and 316,964.42 is: 437,420.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,671.66 : 770,984.38 = 316,964.42 : x
  2. Step 2: Convert to fraction form
    558,671.66/770,984.38 = 316,964.42/x
  3. Step 3: Cross multiply
    558,671.66x = 770,984.38 × 316,964.42
  4. Step 4: Simplify right side
    558,671.66x = 244,374,616,835.76
  5. Step 5: Solve for x
    x = 244,374,616,835.76/558,671.66
  6. Step 6: Final answer
    x = 437,420.82

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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.