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Finding the Fourth Proportional to 554,898,700.80, 765,759,940.44 and 331,880,378.52

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Solution

The fourth proportional to 554,898,700.80, 765,759,940.44 and 331,880,378.52 is: 457,994,762.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,898,700.80 : 765,759,940.44 = 331,880,378.52 : x
  2. Step 2: Convert to fraction form
    554,898,700.80/765,759,940.44 = 331,880,378.52/x
  3. Step 3: Cross multiply
    554,898,700.80x = 765,759,940.44 × 331,880,378.52
  4. Step 4: Simplify right side
    554,898,700.80x = 254,140,698,888,679,872
  5. Step 5: Solve for x
    x = 254,140,698,888,679,872/554,898,700.80
  6. Step 6: Final answer
    x = 457,994,762.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.