Home / 688,617.85-1,032,926.78-419,179.45

Finding the Fourth Proportional to 688,617.85, 1,032,926.78 and 419,179.45

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Solution

The fourth proportional to 688,617.85, 1,032,926.78 and 419,179.45 is: 628,769.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,617.85 : 1,032,926.78 = 419,179.45 : x
  2. Step 2: Convert to fraction form
    688,617.85/1,032,926.78 = 419,179.45/x
  3. Step 3: Cross multiply
    688,617.85x = 1,032,926.78 × 419,179.45
  4. Step 4: Simplify right side
    688,617.85x = 432,981,677,434.77
  5. Step 5: Solve for x
    x = 432,981,677,434.77/688,617.85
  6. Step 6: Final answer
    x = 628,769.18

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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.