Home / 642,124,787.62-886,117,135.56-377,823,899.40

Finding the Fourth Proportional to 642,124,787.62, 886,117,135.56 and 377,823,899.40

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Solution

The fourth proportional to 642,124,787.62, 886,117,135.56 and 377,823,899.40 is: 521,388,113.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,124,787.62 : 886,117,135.56 = 377,823,899.40 : x
  2. Step 2: Convert to fraction form
    642,124,787.62/886,117,135.56 = 377,823,899.40/x
  3. Step 3: Cross multiply
    642,124,787.62x = 886,117,135.56 × 377,823,899.40
  4. Step 4: Simplify right side
    642,124,787.62x = 334,796,231,482,437,568
  5. Step 5: Solve for x
    x = 334,796,231,482,437,568/642,124,787.62
  6. Step 6: Final answer
    x = 521,388,113.24

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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.