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Finding the Fourth Proportional to 978,382.80, 1,465,605.90 and 557,166.60

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Solution

The fourth proportional to 978,382.80, 1,465,605.90 and 557,166.60 is: 834,629.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,382.80 : 1,465,605.90 = 557,166.60 : x
  2. Step 2: Convert to fraction form
    978,382.80/1,465,605.90 = 557,166.60/x
  3. Step 3: Cross multiply
    978,382.80x = 1,465,605.90 × 557,166.60
  4. Step 4: Simplify right side
    978,382.80x = 816,586,656,242.94
  5. Step 5: Solve for x
    x = 816,586,656,242.94/978,382.80
  6. Step 6: Final answer
    x = 834,629.00

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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.