Home / 859,277,712.80-1,285,893,260.40-786,718,301.60

Finding the Fourth Proportional to 859,277,712.80, 1,285,893,260.40 and 786,718,301.60

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Solution

The fourth proportional to 859,277,712.80, 1,285,893,260.40 and 786,718,301.60 is: 1,177,309,438.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,277,712.80 : 1,285,893,260.40 = 786,718,301.60 : x
  2. Step 2: Convert to fraction form
    859,277,712.80/1,285,893,260.40 = 786,718,301.60/x
  3. Step 3: Cross multiply
    859,277,712.80x = 1,285,893,260.40 × 786,718,301.60
  4. Step 4: Simplify right side
    859,277,712.80x = 1,011,635,761,860,774,656
  5. Step 5: Solve for x
    x = 1,011,635,761,860,774,656/859,277,712.80
  6. Step 6: Final answer
    x = 1,177,309,438.84

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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.