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Finding the Fourth Proportional to 569,040.72, 785,029.50 and 342,555

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Solution

The fourth proportional to 569,040.72, 785,029.50 and 342,555 is: 472,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,040.72 : 785,029.50 = 342,555 : x
  2. Step 2: Convert to fraction form
    569,040.72/785,029.50 = 342,555/x
  3. Step 3: Cross multiply
    569,040.72x = 785,029.50 × 342,555
  4. Step 4: Simplify right side
    569,040.72x = 268,915,780,372.50
  5. Step 5: Solve for x
    x = 268,915,780,372.50/569,040.72
  6. Step 6: Final answer
    x = 472,577.39

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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.