Home / 787,868.40-1,182,100.36-308,438.80

Finding the Fourth Proportional to 787,868.40, 1,182,100.36 and 308,438.80

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Solution

The fourth proportional to 787,868.40, 1,182,100.36 and 308,438.80 is: 462,774.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,868.40 : 1,182,100.36 = 308,438.80 : x
  2. Step 2: Convert to fraction form
    787,868.40/1,182,100.36 = 308,438.80/x
  3. Step 3: Cross multiply
    787,868.40x = 1,182,100.36 × 308,438.80
  4. Step 4: Simplify right side
    787,868.40x = 364,605,616,517.97
  5. Step 5: Solve for x
    x = 364,605,616,517.97/787,868.40
  6. Step 6: Final answer
    x = 462,774.77

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Double scale
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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.