Home / 687,359.04-1,031,105.52-255,192.72

Finding the Fourth Proportional to 687,359.04, 1,031,105.52 and 255,192.72

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Solution

The fourth proportional to 687,359.04, 1,031,105.52 and 255,192.72 is: 382,813.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,359.04 : 1,031,105.52 = 255,192.72 : x
  2. Step 2: Convert to fraction form
    687,359.04/1,031,105.52 = 255,192.72/x
  3. Step 3: Cross multiply
    687,359.04x = 1,031,105.52 × 255,192.72
  4. Step 4: Simplify right side
    687,359.04x = 263,130,622,255.81
  5. Step 5: Solve for x
    x = 263,130,622,255.81/687,359.04
  6. Step 6: Final answer
    x = 382,813.94

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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.