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Finding the Fourth Proportional to 913,354.80, 1,367,407.80 and 818,876.40

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Solution

The fourth proportional to 913,354.80, 1,367,407.80 and 818,876.40 is: 1,225,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,354.80 : 1,367,407.80 = 818,876.40 : x
  2. Step 2: Convert to fraction form
    913,354.80/1,367,407.80 = 818,876.40/x
  3. Step 3: Cross multiply
    913,354.80x = 1,367,407.80 × 818,876.40
  4. Step 4: Simplify right side
    913,354.80x = 1,119,737,976,595.92
  5. Step 5: Solve for x
    x = 1,119,737,976,595.92/913,354.80
  6. Step 6: Final answer
    x = 1,225,961.67

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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.