Home / 1,319,328,086.40-1,978,992,129.60-1,258,861,910.40

Finding the Fourth Proportional to 1,319,328,086.40, 1,978,992,129.60 and 1,258,861,910.40

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Solution

The fourth proportional to 1,319,328,086.40, 1,978,992,129.60 and 1,258,861,910.40 is: 1,888,292,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,328,086.40 : 1,978,992,129.60 = 1,258,861,910.40 : x
  2. Step 2: Convert to fraction form
    1,319,328,086.40/1,978,992,129.60 = 1,258,861,910.40/x
  3. Step 3: Cross multiply
    1,319,328,086.40x = 1,978,992,129.60 × 1,258,861,910.40
  4. Step 4: Simplify right side
    1,319,328,086.40x = 2,491,277,812,934,820,352
  5. Step 5: Solve for x
    x = 2,491,277,812,934,820,352/1,319,328,086.40
  6. Step 6: Final answer
    x = 1,888,292,865.60

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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.