Home / 839,808-1,158,981.12-482,135.04

Finding the Fourth Proportional to 839,808, 1,158,981.12 and 482,135.04

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Solution

The fourth proportional to 839,808, 1,158,981.12 and 482,135.04 is: 665,372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808 : 1,158,981.12 = 482,135.04 : x
  2. Step 2: Convert to fraction form
    839,808/1,158,981.12 = 482,135.04/x
  3. Step 3: Cross multiply
    839,808x = 1,158,981.12 × 482,135.04
  4. Step 4: Simplify right side
    839,808x = 558,785,408,650.45
  5. Step 5: Solve for x
    x = 558,785,408,650.45/839,808
  6. Step 6: Final answer
    x = 665,372.81

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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.