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Finding the Fourth Proportional to 807,740.80, 1,210,574.40 and 491,862.40

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Solution

The fourth proportional to 807,740.80, 1,210,574.40 and 491,862.40 is: 737,162.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,740.80 : 1,210,574.40 = 491,862.40 : x
  2. Step 2: Convert to fraction form
    807,740.80/1,210,574.40 = 491,862.40/x
  3. Step 3: Cross multiply
    807,740.80x = 1,210,574.40 × 491,862.40
  4. Step 4: Simplify right side
    807,740.80x = 595,436,029,762.56
  5. Step 5: Solve for x
    x = 595,436,029,762.56/807,740.80
  6. Step 6: Final answer
    x = 737,162.26

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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.