Home / 636,832,260-878,834,782.26-354,578,630.76

Finding the Fourth Proportional to 636,832,260, 878,834,782.26 and 354,578,630.76

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Solution

The fourth proportional to 636,832,260, 878,834,782.26 and 354,578,630.76 is: 489,321,997.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,832,260 : 878,834,782.26 = 354,578,630.76 : x
  2. Step 2: Convert to fraction form
    636,832,260/878,834,782.26 = 354,578,630.76/x
  3. Step 3: Cross multiply
    636,832,260x = 878,834,782.26 × 354,578,630.76
  4. Step 4: Simplify right side
    636,832,260x = 311,616,033,758,013,504
  5. Step 5: Solve for x
    x = 311,616,033,758,013,504/636,832,260
  6. Step 6: Final answer
    x = 489,321,997.85

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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.