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Finding the Fourth Proportional to 489,359.40, 734,039.10 and 323,147.40

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Solution

The fourth proportional to 489,359.40, 734,039.10 and 323,147.40 is: 484,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,359.40 : 734,039.10 = 323,147.40 : x
  2. Step 2: Convert to fraction form
    489,359.40/734,039.10 = 323,147.40/x
  3. Step 3: Cross multiply
    489,359.40x = 734,039.10 × 323,147.40
  4. Step 4: Simplify right side
    489,359.40x = 237,202,826,663.34
  5. Step 5: Solve for x
    x = 237,202,826,663.34/489,359.40
  6. Step 6: Final answer
    x = 484,721.10

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Similar ratio
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1.5x scale

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.