Home / 642,810,144.38-887,085,447.80-356,707,544.31

Finding the Fourth Proportional to 642,810,144.38, 887,085,447.80 and 356,707,544.31

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Solution

The fourth proportional to 642,810,144.38, 887,085,447.80 and 356,707,544.31 is: 492,260,544.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,810,144.38 : 887,085,447.80 = 356,707,544.31 : x
  2. Step 2: Convert to fraction form
    642,810,144.38/887,085,447.80 = 356,707,544.31/x
  3. Step 3: Cross multiply
    642,810,144.38x = 887,085,447.80 × 356,707,544.31
  4. Step 4: Simplify right side
    642,810,144.38x = 316,430,071,676,091,136
  5. Step 5: Solve for x
    x = 316,430,071,676,091,136/642,810,144.38
  6. Step 6: Final answer
    x = 492,260,544.49

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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.