Home / 1,189,799.62-1,641,923.51-645,934.64

Finding the Fourth Proportional to 1,189,799.62, 1,641,923.51 and 645,934.64

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Solution

The fourth proportional to 1,189,799.62, 1,641,923.51 and 645,934.64 is: 891,389.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,799.62 : 1,641,923.51 = 645,934.64 : x
  2. Step 2: Convert to fraction form
    1,189,799.62/1,641,923.51 = 645,934.64/x
  3. Step 3: Cross multiply
    1,189,799.62x = 1,641,923.51 × 645,934.64
  4. Step 4: Simplify right side
    1,189,799.62x = 1,060,575,259,900.10
  5. Step 5: Solve for x
    x = 1,060,575,259,900.10/1,189,799.62
  6. Step 6: Final answer
    x = 891,389.81

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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.