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Finding the Fourth Proportional to 518,636.28, 777,954.56 and 163,678.08

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Solution

The fourth proportional to 518,636.28, 777,954.56 and 163,678.08 is: 245,517.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,636.28 : 777,954.56 = 163,678.08 : x
  2. Step 2: Convert to fraction form
    518,636.28/777,954.56 = 163,678.08/x
  3. Step 3: Cross multiply
    518,636.28x = 777,954.56 × 163,678.08
  4. Step 4: Simplify right side
    518,636.28x = 127,334,107,889.65
  5. Step 5: Solve for x
    x = 127,334,107,889.65/518,636.28
  6. Step 6: Final answer
    x = 245,517.16

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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.