Home / 638,839.92-881,603.28-352,367.76

Finding the Fourth Proportional to 638,839.92, 881,603.28 and 352,367.76

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Solution

The fourth proportional to 638,839.92, 881,603.28 and 352,367.76 is: 486,269.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,839.92 : 881,603.28 = 352,367.76 : x
  2. Step 2: Convert to fraction form
    638,839.92/881,603.28 = 352,367.76/x
  3. Step 3: Cross multiply
    638,839.92x = 881,603.28 × 352,367.76
  4. Step 4: Simplify right side
    638,839.92x = 310,648,572,982.25
  5. Step 5: Solve for x
    x = 310,648,572,982.25/638,839.92
  6. Step 6: Final answer
    x = 486,269.82

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1.5x scale

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.