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Finding the Fourth Proportional to 518,448.79, 777,673.18 and 163,498.69

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Solution

The fourth proportional to 518,448.79, 777,673.18 and 163,498.69 is: 245,248.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,448.79 : 777,673.18 = 163,498.69 : x
  2. Step 2: Convert to fraction form
    518,448.79/777,673.18 = 163,498.69/x
  3. Step 3: Cross multiply
    518,448.79x = 777,673.18 × 163,498.69
  4. Step 4: Simplify right side
    518,448.79x = 127,148,542,520.35
  5. Step 5: Solve for x
    x = 127,148,542,520.35/518,448.79
  6. Step 6: Final answer
    x = 245,248.03

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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.