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Finding the Fourth Proportional to 539,393,774.80, 809,468,575.80 and 345,776,040.40

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Solution

The fourth proportional to 539,393,774.80, 809,468,575.80 and 345,776,040.40 is: 518,906,320.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,393,774.80 : 809,468,575.80 = 345,776,040.40 : x
  2. Step 2: Convert to fraction form
    539,393,774.80/809,468,575.80 = 345,776,040.40/x
  3. Step 3: Cross multiply
    539,393,774.80x = 809,468,575.80 × 345,776,040.40
  4. Step 4: Simplify right side
    539,393,774.80x = 279,894,838,968,351,232
  5. Step 5: Solve for x
    x = 279,894,838,968,351,232/539,393,774.80
  6. Step 6: Final answer
    x = 518,906,320.47

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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.