Home / 1,857,809.21-2,786,045.22-643,055.78

Finding the Fourth Proportional to 1,857,809.21, 2,786,045.22 and 643,055.78

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Solution

The fourth proportional to 1,857,809.21, 2,786,045.22 and 643,055.78 is: 964,352.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857,809.21 : 2,786,045.22 = 643,055.78 : x
  2. Step 2: Convert to fraction form
    1,857,809.21/2,786,045.22 = 643,055.78/x
  3. Step 3: Cross multiply
    1,857,809.21x = 2,786,045.22 × 643,055.78
  4. Step 4: Simplify right side
    1,857,809.21x = 1,791,582,468,132.15
  5. Step 5: Solve for x
    x = 1,791,582,468,132.15/1,857,809.21
  6. Step 6: Final answer
    x = 964,352.24

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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.