Home / 1,291,066.95-1,781,667.66-718,107.18

Finding the Fourth Proportional to 1,291,066.95, 1,781,667.66 and 718,107.18

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Solution

The fourth proportional to 1,291,066.95, 1,781,667.66 and 718,107.18 is: 990,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,066.95 : 1,781,667.66 = 718,107.18 : x
  2. Step 2: Convert to fraction form
    1,291,066.95/1,781,667.66 = 718,107.18/x
  3. Step 3: Cross multiply
    1,291,066.95x = 1,781,667.66 × 718,107.18
  4. Step 4: Simplify right side
    1,291,066.95x = 1,279,428,339,019.80
  5. Step 5: Solve for x
    x = 1,279,428,339,019.80/1,291,066.95
  6. Step 6: Final answer
    x = 990,985.28

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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.