Home / 1,221,440,998,060.90-1,685,665,128,384.30-672,732,193,883.76

Finding the Fourth Proportional to 1,221,440,998,060.90, 1,685,665,128,384.30 and 672,732,193,883.76

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Solution

The fourth proportional to 1,221,440,998,060.90, 1,685,665,128,384.30 and 672,732,193,883.76 is: 928,412,589,532.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440,998,060.90 : 1,685,665,128,384.30 = 672,732,193,883.76 : x
  2. Step 2: Convert to fraction form
    1,221,440,998,060.90/1,685,665,128,384.30 = 672,732,193,883.76/x
  3. Step 3: Cross multiply
    1,221,440,998,060.90x = 1,685,665,128,384.30 × 672,732,193,883.76
  4. Step 4: Simplify right side
    1,221,440,998,060.90x = 1,134,001,199,971,320,167,661,568
  5. Step 5: Solve for x
    x = 1,134,001,199,971,320,167,661,568/1,221,440,998,060.90
  6. Step 6: Final answer
    x = 928,412,589,532.86

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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.