Home / 890,510.72-1,228,890.87-482,608.98

Finding the Fourth Proportional to 890,510.72, 1,228,890.87 and 482,608.98

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Solution

The fourth proportional to 890,510.72, 1,228,890.87 and 482,608.98 is: 665,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,510.72 : 1,228,890.87 = 482,608.98 : x
  2. Step 2: Convert to fraction form
    890,510.72/1,228,890.87 = 482,608.98/x
  3. Step 3: Cross multiply
    890,510.72x = 1,228,890.87 × 482,608.98
  4. Step 4: Simplify right side
    890,510.72x = 593,073,769,302.01
  5. Step 5: Solve for x
    x = 593,073,769,302.01/890,510.72
  6. Step 6: Final answer
    x = 665,992.85

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Double scale
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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.