Home / 643,137.18-887,582.52-356,749.80

Finding the Fourth Proportional to 643,137.18, 887,582.52 and 356,749.80

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Solution

The fourth proportional to 643,137.18, 887,582.52 and 356,749.80 is: 492,344.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,137.18 : 887,582.52 = 356,749.80 : x
  2. Step 2: Convert to fraction form
    643,137.18/887,582.52 = 356,749.80/x
  3. Step 3: Cross multiply
    643,137.18x = 887,582.52 × 356,749.80
  4. Step 4: Simplify right side
    643,137.18x = 316,644,886,493.50
  5. Step 5: Solve for x
    x = 316,644,886,493.50/643,137.18
  6. Step 6: Final answer
    x = 492,344.24

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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.