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Finding the Fourth Proportional to 514,995.92, 709,805 and 342,605.52

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Solution

The fourth proportional to 514,995.92, 709,805 and 342,605.52 is: 472,203.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,995.92 : 709,805 = 342,605.52 : x
  2. Step 2: Convert to fraction form
    514,995.92/709,805 = 342,605.52/x
  3. Step 3: Cross multiply
    514,995.92x = 709,805 × 342,605.52
  4. Step 4: Simplify right side
    514,995.92x = 243,183,111,123.60
  5. Step 5: Solve for x
    x = 243,183,111,123.60/514,995.92
  6. Step 6: Final answer
    x = 472,203.96

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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.