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Finding the Fourth Proportional to 560,962.89, 774,128.72 and 306,314.31

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Solution

The fourth proportional to 560,962.89, 774,128.72 and 306,314.31 is: 422,713.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,962.89 : 774,128.72 = 306,314.31 : x
  2. Step 2: Convert to fraction form
    560,962.89/774,128.72 = 306,314.31/x
  3. Step 3: Cross multiply
    560,962.89x = 774,128.72 × 306,314.31
  4. Step 4: Simplify right side
    560,962.89x = 237,126,703,186.41
  5. Step 5: Solve for x
    x = 237,126,703,186.41/560,962.89
  6. Step 6: Final answer
    x = 422,713.71

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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.