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Finding the Fourth Proportional to 611,366.86, 916,918.98 and 383,552.74

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Solution

The fourth proportional to 611,366.86, 916,918.98 and 383,552.74 is: 575,246.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,366.86 : 916,918.98 = 383,552.74 : x
  2. Step 2: Convert to fraction form
    611,366.86/916,918.98 = 383,552.74/x
  3. Step 3: Cross multiply
    611,366.86x = 916,918.98 × 383,552.74
  4. Step 4: Simplify right side
    611,366.86x = 351,686,787,137.01
  5. Step 5: Solve for x
    x = 351,686,787,137.01/611,366.86
  6. Step 6: Final answer
    x = 575,246.73

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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.