Home / 526,325.75-726,285.39-311,428.16

Finding the Fourth Proportional to 526,325.75, 726,285.39 and 311,428.16

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Solution

The fourth proportional to 526,325.75, 726,285.39 and 311,428.16 is: 429,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,325.75 : 726,285.39 = 311,428.16 : x
  2. Step 2: Convert to fraction form
    526,325.75/726,285.39 = 311,428.16/x
  3. Step 3: Cross multiply
    526,325.75x = 726,285.39 × 311,428.16
  4. Step 4: Simplify right side
    526,325.75x = 226,185,722,642.58
  5. Step 5: Solve for x
    x = 226,185,722,642.58/526,325.75
  6. Step 6: Final answer
    x = 429,744.74

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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.