Home / 811,020,908.60-1,214,142,575.70-763,776,006.20

Finding the Fourth Proportional to 811,020,908.60, 1,214,142,575.70 and 763,776,006.20

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Solution

The fourth proportional to 811,020,908.60, 1,214,142,575.70 and 763,776,006.20 is: 1,143,414,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,020,908.60 : 1,214,142,575.70 = 763,776,006.20 : x
  2. Step 2: Convert to fraction form
    811,020,908.60/1,214,142,575.70 = 763,776,006.20/x
  3. Step 3: Cross multiply
    811,020,908.60x = 1,214,142,575.70 × 763,776,006.20
  4. Step 4: Simplify right side
    811,020,908.60x = 927,332,967,425,527,296
  5. Step 5: Solve for x
    x = 927,332,967,425,527,296/811,020,908.60
  6. Step 6: Final answer
    x = 1,143,414,377.60

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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.