Home / 885,121.90-1,221,258.27-503,118.61

Finding the Fourth Proportional to 885,121.90, 1,221,258.27 and 503,118.61

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Solution

The fourth proportional to 885,121.90, 1,221,258.27 and 503,118.61 is: 694,184.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,121.90 : 1,221,258.27 = 503,118.61 : x
  2. Step 2: Convert to fraction form
    885,121.90/1,221,258.27 = 503,118.61/x
  3. Step 3: Cross multiply
    885,121.90x = 1,221,258.27 × 503,118.61
  4. Step 4: Simplify right side
    885,121.90x = 614,437,763,253.41
  5. Step 5: Solve for x
    x = 614,437,763,253.41/885,121.90
  6. Step 6: Final answer
    x = 694,184.34

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Double scale
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1.5x scale

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.