Home / 498,313.21-687,433.05-326,155.38

Finding the Fourth Proportional to 498,313.21, 687,433.05 and 326,155.38

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Solution

The fourth proportional to 498,313.21, 687,433.05 and 326,155.38 is: 449,937.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,313.21 : 687,433.05 = 326,155.38 : x
  2. Step 2: Convert to fraction form
    498,313.21/687,433.05 = 326,155.38/x
  3. Step 3: Cross multiply
    498,313.21x = 687,433.05 × 326,155.38
  4. Step 4: Simplify right side
    498,313.21x = 224,209,985,986.75
  5. Step 5: Solve for x
    x = 224,209,985,986.75/498,313.21
  6. Step 6: Final answer
    x = 449,937.88

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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.