Home / 498,317.28-687,438.73-326,159.47

Finding the Fourth Proportional to 498,317.28, 687,438.73 and 326,159.47

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Solution

The fourth proportional to 498,317.28, 687,438.73 and 326,159.47 is: 449,943.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,317.28 : 687,438.73 = 326,159.47 : x
  2. Step 2: Convert to fraction form
    498,317.28/687,438.73 = 326,159.47/x
  3. Step 3: Cross multiply
    498,317.28x = 687,438.73 × 326,159.47
  4. Step 4: Simplify right side
    498,317.28x = 224,214,650,203.48
  5. Step 5: Solve for x
    x = 224,214,650,203.48/498,317.28
  6. Step 6: Final answer
    x = 449,943.56

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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.