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Finding the Fourth Proportional to 868,793.80, 1,302,240.30 and 307,539.40

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Solution

The fourth proportional to 868,793.80, 1,302,240.30 and 307,539.40 is: 460,972.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,793.80 : 1,302,240.30 = 307,539.40 : x
  2. Step 2: Convert to fraction form
    868,793.80/1,302,240.30 = 307,539.40/x
  3. Step 3: Cross multiply
    868,793.80x = 1,302,240.30 × 307,539.40
  4. Step 4: Simplify right side
    868,793.80x = 400,490,200,517.82
  5. Step 5: Solve for x
    x = 400,490,200,517.82/868,793.80
  6. Step 6: Final answer
    x = 460,972.67

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1.5x scale

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.