Home / 766,946,769.40-1,150,420,154.10-639,400,929.40

Finding the Fourth Proportional to 766,946,769.40, 1,150,420,154.10 and 639,400,929.40

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Solution

The fourth proportional to 766,946,769.40, 1,150,420,154.10 and 639,400,929.40 is: 959,101,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,946,769.40 : 1,150,420,154.10 = 639,400,929.40 : x
  2. Step 2: Convert to fraction form
    766,946,769.40/1,150,420,154.10 = 639,400,929.40/x
  3. Step 3: Cross multiply
    766,946,769.40x = 1,150,420,154.10 × 639,400,929.40
  4. Step 4: Simplify right side
    766,946,769.40x = 735,579,715,732,031,104
  5. Step 5: Solve for x
    x = 735,579,715,732,031,104/766,946,769.40
  6. Step 6: Final answer
    x = 959,101,394.10

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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.