Home / 1,421,019-1,961,881.06-912,617.64

Finding the Fourth Proportional to 1,421,019, 1,961,881.06 and 912,617.64

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Solution

The fourth proportional to 1,421,019, 1,961,881.06 and 912,617.64 is: 1,259,974.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,019 : 1,961,881.06 = 912,617.64 : x
  2. Step 2: Convert to fraction form
    1,421,019/1,961,881.06 = 912,617.64/x
  3. Step 3: Cross multiply
    1,421,019x = 1,961,881.06 × 912,617.64
  4. Step 4: Simplify right side
    1,421,019x = 1,790,447,262,937.90
  5. Step 5: Solve for x
    x = 1,790,447,262,937.90/1,421,019
  6. Step 6: Final answer
    x = 1,259,974.19

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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.