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Finding the Fourth Proportional to 518,277.85, 777,479.07 and 489,934.33

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Solution

The fourth proportional to 518,277.85, 777,479.07 and 489,934.33 is: 734,960.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,277.85 : 777,479.07 = 489,934.33 : x
  2. Step 2: Convert to fraction form
    518,277.85/777,479.07 = 489,934.33/x
  3. Step 3: Cross multiply
    518,277.85x = 777,479.07 × 489,934.33
  4. Step 4: Simplify right side
    518,277.85x = 380,913,687,249.47
  5. Step 5: Solve for x
    x = 380,913,687,249.47/518,277.85
  6. Step 6: Final answer
    x = 734,960.38

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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.