Home / 643,166.10-887,511.06-356,685.30

Finding the Fourth Proportional to 643,166.10, 887,511.06 and 356,685.30

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Solution

The fourth proportional to 643,166.10, 887,511.06 and 356,685.30 is: 492,193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,166.10 : 887,511.06 = 356,685.30 : x
  2. Step 2: Convert to fraction form
    643,166.10/887,511.06 = 356,685.30/x
  3. Step 3: Cross multiply
    643,166.10x = 887,511.06 × 356,685.30
  4. Step 4: Simplify right side
    643,166.10x = 316,562,148,689.42
  5. Step 5: Solve for x
    x = 316,562,148,689.42/643,166.10
  6. Step 6: Final answer
    x = 492,193.46

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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.