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Finding the Fourth Proportional to 558,692.38, 771,012.98 and 316,985.14

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Solution

The fourth proportional to 558,692.38, 771,012.98 and 316,985.14 is: 437,449.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,692.38 : 771,012.98 = 316,985.14 : x
  2. Step 2: Convert to fraction form
    558,692.38/771,012.98 = 316,985.14/x
  3. Step 3: Cross multiply
    558,692.38x = 771,012.98 × 316,985.14
  4. Step 4: Simplify right side
    558,692.38x = 244,399,657,407.12
  5. Step 5: Solve for x
    x = 244,399,657,407.12/558,692.38
  6. Step 6: Final answer
    x = 437,449.42

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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.