Home / 864,839.80-1,296,824.19-288,258.89

Finding the Fourth Proportional to 864,839.80, 1,296,824.19 and 288,258.89

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Solution

The fourth proportional to 864,839.80, 1,296,824.19 and 288,258.89 is: 432,243.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,839.80 : 1,296,824.19 = 288,258.89 : x
  2. Step 2: Convert to fraction form
    864,839.80/1,296,824.19 = 288,258.89/x
  3. Step 3: Cross multiply
    864,839.80x = 1,296,824.19 × 288,258.89
  4. Step 4: Simplify right side
    864,839.80x = 373,821,093,969.46
  5. Step 5: Solve for x
    x = 373,821,093,969.46/864,839.80
  6. Step 6: Final answer
    x = 432,243.17

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Double scale
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Similar ratio
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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.