Home / 642,964.90-887,345.88-356,577.25

Finding the Fourth Proportional to 642,964.90, 887,345.88 and 356,577.25

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Solution

The fourth proportional to 642,964.90, 887,345.88 and 356,577.25 is: 492,106.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,964.90 : 887,345.88 = 356,577.25 : x
  2. Step 2: Convert to fraction form
    642,964.90/887,345.88 = 356,577.25/x
  3. Step 3: Cross multiply
    642,964.90x = 887,345.88 × 356,577.25
  4. Step 4: Simplify right side
    642,964.90x = 316,407,353,689.23
  5. Step 5: Solve for x
    x = 316,407,353,689.23/642,964.90
  6. Step 6: Final answer
    x = 492,106.73

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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.