Home / 639,077,530.80-957,954,947.40-347,328,231.60

Finding the Fourth Proportional to 639,077,530.80, 957,954,947.40 and 347,328,231.60

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Solution

The fourth proportional to 639,077,530.80, 957,954,947.40 and 347,328,231.60 is: 520,632,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,077,530.80 : 957,954,947.40 = 347,328,231.60 : x
  2. Step 2: Convert to fraction form
    639,077,530.80/957,954,947.40 = 347,328,231.60/x
  3. Step 3: Cross multiply
    639,077,530.80x = 957,954,947.40 × 347,328,231.60
  4. Step 4: Simplify right side
    639,077,530.80x = 332,724,797,832,913,024
  5. Step 5: Solve for x
    x = 332,724,797,832,913,024/639,077,530.80
  6. Step 6: Final answer
    x = 520,632,915.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.