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Finding the Fourth Proportional to 807,697.16, 1,114,645.45 and 445,144.40

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Solution

The fourth proportional to 807,697.16, 1,114,645.45 and 445,144.40 is: 614,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,697.16 : 1,114,645.45 = 445,144.40 : x
  2. Step 2: Convert to fraction form
    807,697.16/1,114,645.45 = 445,144.40/x
  3. Step 3: Cross multiply
    807,697.16x = 1,114,645.45 × 445,144.40
  4. Step 4: Simplify right side
    807,697.16x = 496,178,180,052.98
  5. Step 5: Solve for x
    x = 496,178,180,052.98/807,697.16
  6. Step 6: Final answer
    x = 614,312.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.