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Finding the Fourth Proportional to 897,638.76, 1,340,638.29 and 813,230.28

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Solution

The fourth proportional to 897,638.76, 1,340,638.29 and 813,230.28 is: 1,214,572.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,638.76 : 1,340,638.29 = 813,230.28 : x
  2. Step 2: Convert to fraction form
    897,638.76/1,340,638.29 = 813,230.28/x
  3. Step 3: Cross multiply
    897,638.76x = 1,340,638.29 × 813,230.28
  4. Step 4: Simplify right side
    897,638.76x = 1,090,247,651,955.42
  5. Step 5: Solve for x
    x = 1,090,247,651,955.42/897,638.76
  6. Step 6: Final answer
    x = 1,214,572.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.