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Finding the Fourth Proportional to 520,083.02, 717,728.78 and 293,728.52

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Solution

The fourth proportional to 520,083.02, 717,728.78 and 293,728.52 is: 405,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,083.02 : 717,728.78 = 293,728.52 : x
  2. Step 2: Convert to fraction form
    520,083.02/717,728.78 = 293,728.52/x
  3. Step 3: Cross multiply
    520,083.02x = 717,728.78 × 293,728.52
  4. Step 4: Simplify right side
    520,083.02x = 210,817,412,310.81
  5. Step 5: Solve for x
    x = 210,817,412,310.81/520,083.02
  6. Step 6: Final answer
    x = 405,353.38

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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.