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Finding the Fourth Proportional to 558,706.13, 771,031.86 and 316,998.89

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Solution

The fourth proportional to 558,706.13, 771,031.86 and 316,998.89 is: 437,468.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,706.13 : 771,031.86 = 316,998.89 : x
  2. Step 2: Convert to fraction form
    558,706.13/771,031.86 = 316,998.89/x
  3. Step 3: Cross multiply
    558,706.13x = 771,031.86 × 316,998.89
  4. Step 4: Simplify right side
    558,706.13x = 244,416,243,774.64
  5. Step 5: Solve for x
    x = 244,416,243,774.64/558,706.13
  6. Step 6: Final answer
    x = 437,468.34

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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.