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Finding the Fourth Proportional to 875,761.90, 1,313,642.85 and 804,903.10

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Solution

The fourth proportional to 875,761.90, 1,313,642.85 and 804,903.10 is: 1,207,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,761.90 : 1,313,642.85 = 804,903.10 : x
  2. Step 2: Convert to fraction form
    875,761.90/1,313,642.85 = 804,903.10/x
  3. Step 3: Cross multiply
    875,761.90x = 1,313,642.85 × 804,903.10
  4. Step 4: Simplify right side
    875,761.90x = 1,057,355,202,257.84
  5. Step 5: Solve for x
    x = 1,057,355,202,257.84/875,761.90
  6. Step 6: Final answer
    x = 1,207,354.65

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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.