Home / 920,530.70-1,381,005.23-280,891.66

Finding the Fourth Proportional to 920,530.70, 1,381,005.23 and 280,891.66

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Solution

The fourth proportional to 920,530.70, 1,381,005.23 and 280,891.66 is: 421,401.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,530.70 : 1,381,005.23 = 280,891.66 : x
  2. Step 2: Convert to fraction form
    920,530.70/1,381,005.23 = 280,891.66/x
  3. Step 3: Cross multiply
    920,530.70x = 1,381,005.23 × 280,891.66
  4. Step 4: Simplify right side
    920,530.70x = 387,912,844,618.36
  5. Step 5: Solve for x
    x = 387,912,844,618.36/920,530.70
  6. Step 6: Final answer
    x = 421,401.31

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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.