Home / 820,947.10-1,231,305.45-260,038.30

Finding the Fourth Proportional to 820,947.10, 1,231,305.45 and 260,038.30

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Solution

The fourth proportional to 820,947.10, 1,231,305.45 and 260,038.30 is: 390,020.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,947.10 : 1,231,305.45 = 260,038.30 : x
  2. Step 2: Convert to fraction form
    820,947.10/1,231,305.45 = 260,038.30/x
  3. Step 3: Cross multiply
    820,947.10x = 1,231,305.45 × 260,038.30
  4. Step 4: Simplify right side
    820,947.10x = 320,186,575,998.74
  5. Step 5: Solve for x
    x = 320,186,575,998.74/820,947.10
  6. Step 6: Final answer
    x = 390,020.96

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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.