Home / 638,465.49-881,114.96-351,984.89

Finding the Fourth Proportional to 638,465.49, 881,114.96 and 351,984.89

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Solution

The fourth proportional to 638,465.49, 881,114.96 and 351,984.89 is: 485,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,465.49 : 881,114.96 = 351,984.89 : x
  2. Step 2: Convert to fraction form
    638,465.49/881,114.96 = 351,984.89/x
  3. Step 3: Cross multiply
    638,465.49x = 881,114.96 × 351,984.89
  4. Step 4: Simplify right side
    638,465.49x = 310,139,155,355.70
  5. Step 5: Solve for x
    x = 310,139,155,355.70/638,465.49
  6. Step 6: Final answer
    x = 485,757.12

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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.