Home / 856,207.77-1,182,360.95-640,974.21

Finding the Fourth Proportional to 856,207.77, 1,182,360.95 and 640,974.21

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Solution

The fourth proportional to 856,207.77, 1,182,360.95 and 640,974.21 is: 885,138.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,207.77 : 1,182,360.95 = 640,974.21 : x
  2. Step 2: Convert to fraction form
    856,207.77/1,182,360.95 = 640,974.21/x
  3. Step 3: Cross multiply
    856,207.77x = 1,182,360.95 × 640,974.21
  4. Step 4: Simplify right side
    856,207.77x = 757,862,872,656.23
  5. Step 5: Solve for x
    x = 757,862,872,656.23/856,207.77
  6. Step 6: Final answer
    x = 885,138.98

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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.