Home / 919,178.73-1,378,768.10-288,141.75

Finding the Fourth Proportional to 919,178.73, 1,378,768.10 and 288,141.75

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Solution

The fourth proportional to 919,178.73, 1,378,768.10 and 288,141.75 is: 432,212.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,178.73 : 1,378,768.10 = 288,141.75 : x
  2. Step 2: Convert to fraction form
    919,178.73/1,378,768.10 = 288,141.75/x
  3. Step 3: Cross multiply
    919,178.73x = 1,378,768.10 × 288,141.75
  4. Step 4: Simplify right side
    919,178.73x = 397,280,651,737.47
  5. Step 5: Solve for x
    x = 397,280,651,737.47/919,178.73
  6. Step 6: Final answer
    x = 432,212.63

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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.