Home / 812,905.02-1,219,476.34-391,834.62

Finding the Fourth Proportional to 812,905.02, 1,219,476.34 and 391,834.62

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Solution

The fourth proportional to 812,905.02, 1,219,476.34 and 391,834.62 is: 587,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,905.02 : 1,219,476.34 = 391,834.62 : x
  2. Step 2: Convert to fraction form
    812,905.02/1,219,476.34 = 391,834.62/x
  3. Step 3: Cross multiply
    812,905.02x = 1,219,476.34 × 391,834.62
  4. Step 4: Simplify right side
    812,905.02x = 477,833,048,282.89
  5. Step 5: Solve for x
    x = 477,833,048,282.89/812,905.02
  6. Step 6: Final answer
    x = 587,809.20

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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.