Home / 920,141.80-1,380,212.70-470,713.30

Finding the Fourth Proportional to 920,141.80, 1,380,212.70 and 470,713.30

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Solution

The fourth proportional to 920,141.80, 1,380,212.70 and 470,713.30 is: 706,069.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,141.80 : 1,380,212.70 = 470,713.30 : x
  2. Step 2: Convert to fraction form
    920,141.80/1,380,212.70 = 470,713.30/x
  3. Step 3: Cross multiply
    920,141.80x = 1,380,212.70 × 470,713.30
  4. Step 4: Simplify right side
    920,141.80x = 649,684,474,718.91
  5. Step 5: Solve for x
    x = 649,684,474,718.91/920,141.80
  6. Step 6: Final answer
    x = 706,069.95

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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.