Home / 766,520,042.69-1,149,789,284.21-213,788,815.02

Finding the Fourth Proportional to 766,520,042.69, 1,149,789,284.21 and 213,788,815.02

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Solution

The fourth proportional to 766,520,042.69, 1,149,789,284.21 and 213,788,815.02 is: 320,685,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,520,042.69 : 1,149,789,284.21 = 213,788,815.02 : x
  2. Step 2: Convert to fraction form
    766,520,042.69/1,149,789,284.21 = 213,788,815.02/x
  3. Step 3: Cross multiply
    766,520,042.69x = 1,149,789,284.21 × 213,788,815.02
  4. Step 4: Simplify right side
    766,520,042.69x = 245,812,088,592,880,960
  5. Step 5: Solve for x
    x = 245,812,088,592,880,960/766,520,042.69
  6. Step 6: Final answer
    x = 320,685,794.11

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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.