Home / 931,040,391.74-1,284,893,089.80-513,351,385.34

Finding the Fourth Proportional to 931,040,391.74, 1,284,893,089.80 and 513,351,385.34

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Solution

The fourth proportional to 931,040,391.74, 1,284,893,089.80 and 513,351,385.34 is: 708,456,532.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,040,391.74 : 1,284,893,089.80 = 513,351,385.34 : x
  2. Step 2: Convert to fraction form
    931,040,391.74/1,284,893,089.80 = 513,351,385.34/x
  3. Step 3: Cross multiply
    931,040,391.74x = 1,284,893,089.80 × 513,351,385.34
  4. Step 4: Simplify right side
    931,040,391.74x = 659,601,647,662,622,976
  5. Step 5: Solve for x
    x = 659,601,647,662,622,976/931,040,391.74
  6. Step 6: Final answer
    x = 708,456,532.62

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Double scale
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1.5x scale

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.