Home / 687,966.60-1,031,949.90-266,969.10

Finding the Fourth Proportional to 687,966.60, 1,031,949.90 and 266,969.10

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Solution

The fourth proportional to 687,966.60, 1,031,949.90 and 266,969.10 is: 400,453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,966.60 : 1,031,949.90 = 266,969.10 : x
  2. Step 2: Convert to fraction form
    687,966.60/1,031,949.90 = 266,969.10/x
  3. Step 3: Cross multiply
    687,966.60x = 1,031,949.90 × 266,969.10
  4. Step 4: Simplify right side
    687,966.60x = 275,498,736,048.09
  5. Step 5: Solve for x
    x = 275,498,736,048.09/687,966.60
  6. Step 6: Final answer
    x = 400,453.65

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1.5x scale

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.