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Finding the Fourth Proportional to 558,234.47, 770,347.10 and 316,539.11

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Solution

The fourth proportional to 558,234.47, 770,347.10 and 316,539.11 is: 436,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,234.47 : 770,347.10 = 316,539.11 : x
  2. Step 2: Convert to fraction form
    558,234.47/770,347.10 = 316,539.11/x
  3. Step 3: Cross multiply
    558,234.47x = 770,347.10 × 316,539.11
  4. Step 4: Simplify right side
    558,234.47x = 243,844,979,990.65
  5. Step 5: Solve for x
    x = 243,844,979,990.65/558,234.47
  6. Step 6: Final answer
    x = 436,814.63

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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.