Home / 1,221,440,998,073.40-1,685,665,128,401.60-672,732,193,896.10

Finding the Fourth Proportional to 1,221,440,998,073.40, 1,685,665,128,401.60 and 672,732,193,896.10

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Solution

The fourth proportional to 1,221,440,998,073.40, 1,685,665,128,401.60 and 672,732,193,896.10 is: 928,412,589,549.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440,998,073.40 : 1,685,665,128,401.60 = 672,732,193,896.10 : x
  2. Step 2: Convert to fraction form
    1,221,440,998,073.40/1,685,665,128,401.60 = 672,732,193,896.10/x
  3. Step 3: Cross multiply
    1,221,440,998,073.40x = 1,685,665,128,401.60 × 672,732,193,896.10
  4. Step 4: Simplify right side
    1,221,440,998,073.40x = 1,134,001,200,003,759,518,777,344
  5. Step 5: Solve for x
    x = 1,134,001,200,003,759,518,777,344/1,221,440,998,073.40
  6. Step 6: Final answer
    x = 928,412,589,549.92

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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.