Home / 687,520.80-1,032,204.60-403,502.40

Finding the Fourth Proportional to 687,520.80, 1,032,204.60 and 403,502.40

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Solution

The fourth proportional to 687,520.80, 1,032,204.60 and 403,502.40 is: 605,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,520.80 : 1,032,204.60 = 403,502.40 : x
  2. Step 2: Convert to fraction form
    687,520.80/1,032,204.60 = 403,502.40/x
  3. Step 3: Cross multiply
    687,520.80x = 1,032,204.60 × 403,502.40
  4. Step 4: Simplify right side
    687,520.80x = 416,497,033,391.04
  5. Step 5: Solve for x
    x = 416,497,033,391.04/687,520.80
  6. Step 6: Final answer
    x = 605,795.54

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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.