Home / 643,050.12-887,405.58-356,612.52

Finding the Fourth Proportional to 643,050.12, 887,405.58 and 356,612.52

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Solution

The fourth proportional to 643,050.12, 887,405.58 and 356,612.52 is: 492,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,050.12 : 887,405.58 = 356,612.52 : x
  2. Step 2: Convert to fraction form
    643,050.12/887,405.58 = 356,612.52/x
  3. Step 3: Cross multiply
    643,050.12x = 887,405.58 × 356,612.52
  4. Step 4: Simplify right side
    643,050.12x = 316,459,940,145.86
  5. Step 5: Solve for x
    x = 316,459,940,145.86/643,050.12
  6. Step 6: Final answer
    x = 492,123.29

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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.