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Finding the Fourth Proportional to 897,638.70, 1,346,458.05 and 862,209.30

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Solution

The fourth proportional to 897,638.70, 1,346,458.05 and 862,209.30 is: 1,293,313.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,638.70 : 1,346,458.05 = 862,209.30 : x
  2. Step 2: Convert to fraction form
    897,638.70/1,346,458.05 = 862,209.30/x
  3. Step 3: Cross multiply
    897,638.70x = 1,346,458.05 × 862,209.30
  4. Step 4: Simplify right side
    897,638.70x = 1,160,928,652,769.87
  5. Step 5: Solve for x
    x = 1,160,928,652,769.87/897,638.70
  6. Step 6: Final answer
    x = 1,293,313.95

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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.