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Finding the Fourth Proportional to 807,614.40, 1,210,109.40 and 694,765.20

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Solution

The fourth proportional to 807,614.40, 1,210,109.40 and 694,765.20 is: 1,041,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,614.40 : 1,210,109.40 = 694,765.20 : x
  2. Step 2: Convert to fraction form
    807,614.40/1,210,109.40 = 694,765.20/x
  3. Step 3: Cross multiply
    807,614.40x = 1,210,109.40 × 694,765.20
  4. Step 4: Simplify right side
    807,614.40x = 840,741,899,312.88
  5. Step 5: Solve for x
    x = 840,741,899,312.88/807,614.40
  6. Step 6: Final answer
    x = 1,041,018.96

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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.