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Finding the Fourth Proportional to 558,687.51, 771,006.26 and 316,980.27

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Solution

The fourth proportional to 558,687.51, 771,006.26 and 316,980.27 is: 437,442.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,687.51 : 771,006.26 = 316,980.27 : x
  2. Step 2: Convert to fraction form
    558,687.51/771,006.26 = 316,980.27/x
  3. Step 3: Cross multiply
    558,687.51x = 771,006.26 × 316,980.27
  4. Step 4: Simplify right side
    558,687.51x = 244,393,772,466.49
  5. Step 5: Solve for x
    x = 244,393,772,466.49/558,687.51
  6. Step 6: Final answer
    x = 437,442.70

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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.