Home / 1,205,854.85-1,663,974.73-661,988.45

Finding the Fourth Proportional to 1,205,854.85, 1,663,974.73 and 661,988.45

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Solution

The fourth proportional to 1,205,854.85, 1,663,974.73 and 661,988.45 is: 913,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,854.85 : 1,663,974.73 = 661,988.45 : x
  2. Step 2: Convert to fraction form
    1,205,854.85/1,663,974.73 = 661,988.45/x
  3. Step 3: Cross multiply
    1,205,854.85x = 1,663,974.73 × 661,988.45
  4. Step 4: Simplify right side
    1,205,854.85x = 1,101,532,042,377.02
  5. Step 5: Solve for x
    x = 1,101,532,042,377.02/1,205,854.85
  6. Step 6: Final answer
    x = 913,486.43

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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.