Home / 643,392,789,095.16-887,922,372,143.52-354,360,991,010.06

Finding the Fourth Proportional to 643,392,789,095.16, 887,922,372,143.52 and 354,360,991,010.06

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Solution

The fourth proportional to 643,392,789,095.16, 887,922,372,143.52 and 354,360,991,010.06 is: 489,040,376,369.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,392,789,095.16 : 887,922,372,143.52 = 354,360,991,010.06 : x
  2. Step 2: Convert to fraction form
    643,392,789,095.16/887,922,372,143.52 = 354,360,991,010.06/x
  3. Step 3: Cross multiply
    643,392,789,095.16x = 887,922,372,143.52 × 354,360,991,010.06
  4. Step 4: Simplify right side
    643,392,789,095.16x = 314,645,051,732,781,034,373,120
  5. Step 5: Solve for x
    x = 314,645,051,732,781,034,373,120/643,392,789,095.16
  6. Step 6: Final answer
    x = 489,040,376,369.91

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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.