Home / 638,322.79-880,885.45-351,849.03

Finding the Fourth Proportional to 638,322.79, 880,885.45 and 351,849.03

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Solution

The fourth proportional to 638,322.79, 880,885.45 and 351,849.03 is: 485,551.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,322.79 : 880,885.45 = 351,849.03 : x
  2. Step 2: Convert to fraction form
    638,322.79/880,885.45 = 351,849.03/x
  3. Step 3: Cross multiply
    638,322.79x = 880,885.45 × 351,849.03
  4. Step 4: Simplify right side
    638,322.79x = 309,938,691,123.61
  5. Step 5: Solve for x
    x = 309,938,691,123.61/638,322.79
  6. Step 6: Final answer
    x = 485,551.66

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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.