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Finding the Fourth Proportional to 517,967,200.80, 776,950,801.20 and 494,079,328.80

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Solution

The fourth proportional to 517,967,200.80, 776,950,801.20 and 494,079,328.80 is: 741,118,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,967,200.80 : 776,950,801.20 = 494,079,328.80 : x
  2. Step 2: Convert to fraction form
    517,967,200.80/776,950,801.20 = 494,079,328.80/x
  3. Step 3: Cross multiply
    517,967,200.80x = 776,950,801.20 × 494,079,328.80
  4. Step 4: Simplify right side
    517,967,200.80x = 383,875,330,367,518,272
  5. Step 5: Solve for x
    x = 383,875,330,367,518,272/517,967,200.80
  6. Step 6: Final answer
    x = 741,118,993.20

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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.