Home / 688,103.52-1,031,630.04-388,921.92

Finding the Fourth Proportional to 688,103.52, 1,031,630.04 and 388,921.92

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Solution

The fourth proportional to 688,103.52, 1,031,630.04 and 388,921.92 is: 583,086.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,103.52 : 1,031,630.04 = 388,921.92 : x
  2. Step 2: Convert to fraction form
    688,103.52/1,031,630.04 = 388,921.92/x
  3. Step 3: Cross multiply
    688,103.52x = 1,031,630.04 × 388,921.92
  4. Step 4: Simplify right side
    688,103.52x = 401,223,535,886.48
  5. Step 5: Solve for x
    x = 401,223,535,886.48/688,103.52
  6. Step 6: Final answer
    x = 583,086.01

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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.