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Finding the Fourth Proportional to 513,479.28, 769,994.22 and 243,684.74

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Solution

The fourth proportional to 513,479.28, 769,994.22 and 243,684.74 is: 365,420.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,479.28 : 769,994.22 = 243,684.74 : x
  2. Step 2: Convert to fraction form
    513,479.28/769,994.22 = 243,684.74/x
  3. Step 3: Cross multiply
    513,479.28x = 769,994.22 × 243,684.74
  4. Step 4: Simplify right side
    513,479.28x = 187,635,837,452.23
  5. Step 5: Solve for x
    x = 187,635,837,452.23/513,479.28
  6. Step 6: Final answer
    x = 365,420.47

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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.