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Finding the Fourth Proportional to 520,608.06, 780,020.89 and 284,116.82

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Solution

The fourth proportional to 520,608.06, 780,020.89 and 284,116.82 is: 425,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,608.06 : 780,020.89 = 284,116.82 : x
  2. Step 2: Convert to fraction form
    520,608.06/780,020.89 = 284,116.82/x
  3. Step 3: Cross multiply
    520,608.06x = 780,020.89 × 284,116.82
  4. Step 4: Simplify right side
    520,608.06x = 221,617,050,189.97
  5. Step 5: Solve for x
    x = 221,617,050,189.97/520,608.06
  6. Step 6: Final answer
    x = 425,688.86

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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.