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Finding the Fourth Proportional to 875,108.70, 1,312,663.05 and 800,313.30

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Solution

The fourth proportional to 875,108.70, 1,312,663.05 and 800,313.30 is: 1,200,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,108.70 : 1,312,663.05 = 800,313.30 : x
  2. Step 2: Convert to fraction form
    875,108.70/1,312,663.05 = 800,313.30/x
  3. Step 3: Cross multiply
    875,108.70x = 1,312,663.05 × 800,313.30
  4. Step 4: Simplify right side
    875,108.70x = 1,050,541,697,333.57
  5. Step 5: Solve for x
    x = 1,050,541,697,333.57/875,108.70
  6. Step 6: Final answer
    x = 1,200,469.95

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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.