Home / 856,169.40-1,182,307.98-640,935.79

Finding the Fourth Proportional to 856,169.40, 1,182,307.98 and 640,935.79

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Solution

The fourth proportional to 856,169.40, 1,182,307.98 and 640,935.79 is: 885,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,169.40 : 1,182,307.98 = 640,935.79 : x
  2. Step 2: Convert to fraction form
    856,169.40/1,182,307.98 = 640,935.79/x
  3. Step 3: Cross multiply
    856,169.40x = 1,182,307.98 × 640,935.79
  4. Step 4: Simplify right side
    856,169.40x = 757,783,499,184.60
  5. Step 5: Solve for x
    x = 757,783,499,184.60/856,169.40
  6. Step 6: Final answer
    x = 885,085.94

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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.