Home / 843,255.40-1,262,258.70-487,211.80

Finding the Fourth Proportional to 843,255.40, 1,262,258.70 and 487,211.80

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Solution

The fourth proportional to 843,255.40, 1,262,258.70 and 487,211.80 is: 729,301.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,255.40 : 1,262,258.70 = 487,211.80 : x
  2. Step 2: Convert to fraction form
    843,255.40/1,262,258.70 = 487,211.80/x
  3. Step 3: Cross multiply
    843,255.40x = 1,262,258.70 × 487,211.80
  4. Step 4: Simplify right side
    843,255.40x = 614,987,333,292.66
  5. Step 5: Solve for x
    x = 614,987,333,292.66/843,255.40
  6. Step 6: Final answer
    x = 729,301.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.