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Finding the Fourth Proportional to 520,040.25, 717,655.55 and 281,576.25

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Solution

The fourth proportional to 520,040.25, 717,655.55 and 281,576.25 is: 388,575.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,040.25 : 717,655.55 = 281,576.25 : x
  2. Step 2: Convert to fraction form
    520,040.25/717,655.55 = 281,576.25/x
  3. Step 3: Cross multiply
    520,040.25x = 717,655.55 × 281,576.25
  4. Step 4: Simplify right side
    520,040.25x = 202,074,757,152.81
  5. Step 5: Solve for x
    x = 202,074,757,152.81/520,040.25
  6. Step 6: Final answer
    x = 388,575.23

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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.