Home / 638,352.66-880,926.45-351,877.53

Finding the Fourth Proportional to 638,352.66, 880,926.45 and 351,877.53

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Solution

The fourth proportional to 638,352.66, 880,926.45 and 351,877.53 is: 485,590.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,352.66 : 880,926.45 = 351,877.53 : x
  2. Step 2: Convert to fraction form
    638,352.66/880,926.45 = 351,877.53/x
  3. Step 3: Cross multiply
    638,352.66x = 880,926.45 × 351,877.53
  4. Step 4: Simplify right side
    638,352.66x = 309,978,223,337.67
  5. Step 5: Solve for x
    x = 309,978,223,337.67/638,352.66
  6. Step 6: Final answer
    x = 485,590.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.