Home / 920,087.30-1,380,186.06-289,001.09

Finding the Fourth Proportional to 920,087.30, 1,380,186.06 and 289,001.09

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Solution

The fourth proportional to 920,087.30, 1,380,186.06 and 289,001.09 is: 433,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,087.30 : 1,380,186.06 = 289,001.09 : x
  2. Step 2: Convert to fraction form
    920,087.30/1,380,186.06 = 289,001.09/x
  3. Step 3: Cross multiply
    920,087.30x = 1,380,186.06 × 289,001.09
  4. Step 4: Simplify right side
    920,087.30x = 398,875,275,742.81
  5. Step 5: Solve for x
    x = 398,875,275,742.81/920,087.30
  6. Step 6: Final answer
    x = 433,518.95

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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.