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Finding the Fourth Proportional to 560,786.89, 773,885.70 and 306,138.07

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Solution

The fourth proportional to 560,786.89, 773,885.70 and 306,138.07 is: 422,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,786.89 : 773,885.70 = 306,138.07 : x
  2. Step 2: Convert to fraction form
    560,786.89/773,885.70 = 306,138.07/x
  3. Step 3: Cross multiply
    560,786.89x = 773,885.70 × 306,138.07
  4. Step 4: Simplify right side
    560,786.89x = 236,915,874,598.60
  5. Step 5: Solve for x
    x = 236,915,874,598.60/560,786.89
  6. Step 6: Final answer
    x = 422,470.42

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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.