Home / 687,752.60-1,031,776.32-207,939.38

Finding the Fourth Proportional to 687,752.60, 1,031,776.32 and 207,939.38

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Solution

The fourth proportional to 687,752.60, 1,031,776.32 and 207,939.38 is: 311,953.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,752.60 : 1,031,776.32 = 207,939.38 : x
  2. Step 2: Convert to fraction form
    687,752.60/1,031,776.32 = 207,939.38/x
  3. Step 3: Cross multiply
    687,752.60x = 1,031,776.32 × 207,939.38
  4. Step 4: Simplify right side
    687,752.60x = 214,546,928,279.48
  5. Step 5: Solve for x
    x = 214,546,928,279.48/687,752.60
  6. Step 6: Final answer
    x = 311,953.64

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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.