Home / 687,631.80-1,031,447.70-677,134.20

Finding the Fourth Proportional to 687,631.80, 1,031,447.70 and 677,134.20

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Solution

The fourth proportional to 687,631.80, 1,031,447.70 and 677,134.20 is: 1,015,701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,631.80 : 1,031,447.70 = 677,134.20 : x
  2. Step 2: Convert to fraction form
    687,631.80/1,031,447.70 = 677,134.20/x
  3. Step 3: Cross multiply
    687,631.80x = 1,031,447.70 × 677,134.20
  4. Step 4: Simplify right side
    687,631.80x = 698,428,513,181.34
  5. Step 5: Solve for x
    x = 698,428,513,181.34/687,631.80
  6. Step 6: Final answer
    x = 1,015,701.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.