Home / 642,827.02-887,041.62-356,322.72

Finding the Fourth Proportional to 642,827.02, 887,041.62 and 356,322.72

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Solution

The fourth proportional to 642,827.02, 887,041.62 and 356,322.72 is: 491,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,827.02 : 887,041.62 = 356,322.72 : x
  2. Step 2: Convert to fraction form
    642,827.02/887,041.62 = 356,322.72/x
  3. Step 3: Cross multiply
    642,827.02x = 887,041.62 × 356,322.72
  4. Step 4: Simplify right side
    642,827.02x = 316,073,082,791.61
  5. Step 5: Solve for x
    x = 316,073,082,791.61/642,827.02
  6. Step 6: Final answer
    x = 491,692.28

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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.