Home / 498,315.90-687,436.75-326,158.08

Finding the Fourth Proportional to 498,315.90, 687,436.75 and 326,158.08

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Solution

The fourth proportional to 498,315.90, 687,436.75 and 326,158.08 is: 449,941.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,315.90 : 687,436.75 = 326,158.08 : x
  2. Step 2: Convert to fraction form
    498,315.90/687,436.75 = 326,158.08/x
  3. Step 3: Cross multiply
    498,315.90x = 687,436.75 × 326,158.08
  4. Step 4: Simplify right side
    498,315.90x = 224,213,050,501.44
  5. Step 5: Solve for x
    x = 224,213,050,501.44/498,315.90
  6. Step 6: Final answer
    x = 449,941.59

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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.