Home / 688,519.40-1,030,737.90-511,809.80

Finding the Fourth Proportional to 688,519.40, 1,030,737.90 and 511,809.80

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Solution

The fourth proportional to 688,519.40, 1,030,737.90 and 511,809.80 is: 766,197.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,519.40 : 1,030,737.90 = 511,809.80 : x
  2. Step 2: Convert to fraction form
    688,519.40/1,030,737.90 = 511,809.80/x
  3. Step 3: Cross multiply
    688,519.40x = 1,030,737.90 × 511,809.80
  4. Step 4: Simplify right side
    688,519.40x = 527,541,758,451.42
  5. Step 5: Solve for x
    x = 527,541,758,451.42/688,519.40
  6. Step 6: Final answer
    x = 766,197.38

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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.