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Finding the Fourth Proportional to 489,357.40, 734,036.10 and 323,145.40

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Solution

The fourth proportional to 489,357.40, 734,036.10 and 323,145.40 is: 484,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,357.40 : 734,036.10 = 323,145.40 : x
  2. Step 2: Convert to fraction form
    489,357.40/734,036.10 = 323,145.40/x
  3. Step 3: Cross multiply
    489,357.40x = 734,036.10 × 323,145.40
  4. Step 4: Simplify right side
    489,357.40x = 237,200,389,148.94
  5. Step 5: Solve for x
    x = 237,200,389,148.94/489,357.40
  6. Step 6: Final answer
    x = 484,718.10

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Similar ratio
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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.