Home / 520,122.06-780,805.17-309,859.02

Finding the Fourth Proportional to 520,122.06, 780,805.17 and 309,859.02

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Solution

The fourth proportional to 520,122.06, 780,805.17 and 309,859.02 is: 465,159.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,122.06 : 780,805.17 = 309,859.02 : x
  2. Step 2: Convert to fraction form
    520,122.06/780,805.17 = 309,859.02/x
  3. Step 3: Cross multiply
    520,122.06x = 780,805.17 × 309,859.02
  4. Step 4: Simplify right side
    520,122.06x = 241,939,524,787.13
  5. Step 5: Solve for x
    x = 241,939,524,787.13/520,122.06
  6. Step 6: Final answer
    x = 465,159.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.