Home / 1,384,398.80-1,910,878.92-811,562.96

Finding the Fourth Proportional to 1,384,398.80, 1,910,878.92 and 811,562.96

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Solution

The fourth proportional to 1,384,398.80, 1,910,878.92 and 811,562.96 is: 1,120,196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,398.80 : 1,910,878.92 = 811,562.96 : x
  2. Step 2: Convert to fraction form
    1,384,398.80/1,910,878.92 = 811,562.96/x
  3. Step 3: Cross multiply
    1,384,398.80x = 1,910,878.92 × 811,562.96
  4. Step 4: Simplify right side
    1,384,398.80x = 1,550,798,552,516.80
  5. Step 5: Solve for x
    x = 1,550,798,552,516.80/1,384,398.80
  6. Step 6: Final answer
    x = 1,120,196.40

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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.