Home / 643,392,789,096.16-887,922,372,144.90-354,360,991,011.06

Finding the Fourth Proportional to 643,392,789,096.16, 887,922,372,144.90 and 354,360,991,011.06

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Solution

The fourth proportional to 643,392,789,096.16, 887,922,372,144.90 and 354,360,991,011.06 is: 489,040,376,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,392,789,096.16 : 887,922,372,144.90 = 354,360,991,011.06 : x
  2. Step 2: Convert to fraction form
    643,392,789,096.16/887,922,372,144.90 = 354,360,991,011.06/x
  3. Step 3: Cross multiply
    643,392,789,096.16x = 887,922,372,144.90 × 354,360,991,011.06
  4. Step 4: Simplify right side
    643,392,789,096.16x = 314,645,051,734,157,974,044,672
  5. Step 5: Solve for x
    x = 314,645,051,734,157,974,044,672/643,392,789,096.16
  6. Step 6: Final answer
    x = 489,040,376,371.29

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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.