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Finding the Fourth Proportional to 719,772.80, 1,079,140.80 and 404,326.40

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Solution

The fourth proportional to 719,772.80, 1,079,140.80 and 404,326.40 is: 606,198.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,772.80 : 1,079,140.80 = 404,326.40 : x
  2. Step 2: Convert to fraction form
    719,772.80/1,079,140.80 = 404,326.40/x
  3. Step 3: Cross multiply
    719,772.80x = 1,079,140.80 × 404,326.40
  4. Step 4: Simplify right side
    719,772.80x = 436,325,114,757.12
  5. Step 5: Solve for x
    x = 436,325,114,757.12/719,772.80
  6. Step 6: Final answer
    x = 606,198.39

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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.