Home / 687,942.60-1,031,442.80-350,329.72

Finding the Fourth Proportional to 687,942.60, 1,031,442.80 and 350,329.72

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Solution

The fourth proportional to 687,942.60, 1,031,442.80 and 350,329.72 is: 525,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,942.60 : 1,031,442.80 = 350,329.72 : x
  2. Step 2: Convert to fraction form
    687,942.60/1,031,442.80 = 350,329.72/x
  3. Step 3: Cross multiply
    687,942.60x = 1,031,442.80 × 350,329.72
  4. Step 4: Simplify right side
    687,942.60x = 361,345,067,320.02
  5. Step 5: Solve for x
    x = 361,345,067,320.02/687,942.60
  6. Step 6: Final answer
    x = 525,254.68

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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.