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Finding the Fourth Proportional to 526,638.24, 726,742.80 and 300,356.64

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Solution

The fourth proportional to 526,638.24, 726,742.80 and 300,356.64 is: 414,481.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,638.24 : 726,742.80 = 300,356.64 : x
  2. Step 2: Convert to fraction form
    526,638.24/726,742.80 = 300,356.64/x
  3. Step 3: Cross multiply
    526,638.24x = 726,742.80 × 300,356.64
  4. Step 4: Simplify right side
    526,638.24x = 218,282,025,552.19
  5. Step 5: Solve for x
    x = 218,282,025,552.19/526,638.24
  6. Step 6: Final answer
    x = 414,481.91

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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.