Home / 688,717.40-1,031,034.90-512,007.80

Finding the Fourth Proportional to 688,717.40, 1,031,034.90 and 512,007.80

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Solution

The fourth proportional to 688,717.40, 1,031,034.90 and 512,007.80 is: 766,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,717.40 : 1,031,034.90 = 512,007.80 : x
  2. Step 2: Convert to fraction form
    688,717.40/1,031,034.90 = 512,007.80/x
  3. Step 3: Cross multiply
    688,717.40x = 1,031,034.90 × 512,007.80
  4. Step 4: Simplify right side
    688,717.40x = 527,897,910,872.22
  5. Step 5: Solve for x
    x = 527,897,910,872.22/688,717.40
  6. Step 6: Final answer
    x = 766,494.23

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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.