Home / 520,035.10-780,139.05-204,502.30

Finding the Fourth Proportional to 520,035.10, 780,139.05 and 204,502.30

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Solution

The fourth proportional to 520,035.10, 780,139.05 and 204,502.30 is: 306,787.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,035.10 : 780,139.05 = 204,502.30 : x
  2. Step 2: Convert to fraction form
    520,035.10/780,139.05 = 204,502.30/x
  3. Step 3: Cross multiply
    520,035.10x = 780,139.05 × 204,502.30
  4. Step 4: Simplify right side
    520,035.10x = 159,540,230,044.82
  5. Step 5: Solve for x
    x = 159,540,230,044.82/520,035.10
  6. Step 6: Final answer
    x = 306,787.43

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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.