Home / 642,726.32-887,015.40-356,336.24

Finding the Fourth Proportional to 642,726.32, 887,015.40 and 356,336.24

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Solution

The fourth proportional to 642,726.32, 887,015.40 and 356,336.24 is: 491,773.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,726.32 : 887,015.40 = 356,336.24 : x
  2. Step 2: Convert to fraction form
    642,726.32/887,015.40 = 356,336.24/x
  3. Step 3: Cross multiply
    642,726.32x = 887,015.40 × 356,336.24
  4. Step 4: Simplify right side
    642,726.32x = 316,075,732,458.10
  5. Step 5: Solve for x
    x = 316,075,732,458.10/642,726.32
  6. Step 6: Final answer
    x = 491,773.44

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1.5x scale

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.