Home / 991,728.38-1,368,614.04-561,994.22

Finding the Fourth Proportional to 991,728.38, 1,368,614.04 and 561,994.22

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Solution

The fourth proportional to 991,728.38, 1,368,614.04 and 561,994.22 is: 775,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,728.38 : 1,368,614.04 = 561,994.22 : x
  2. Step 2: Convert to fraction form
    991,728.38/1,368,614.04 = 561,994.22/x
  3. Step 3: Cross multiply
    991,728.38x = 1,368,614.04 × 561,994.22
  4. Step 4: Simplify right side
    991,728.38x = 769,153,181,204.91
  5. Step 5: Solve for x
    x = 769,153,181,204.91/991,728.38
  6. Step 6: Final answer
    x = 775,568.39

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1.5x scale

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.