Home / 1,221,440,998,047.40-1,685,665,128,365.80-672,732,193,870.20

Finding the Fourth Proportional to 1,221,440,998,047.40, 1,685,665,128,365.80 and 672,732,193,870.20

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Solution

The fourth proportional to 1,221,440,998,047.40, 1,685,665,128,365.80 and 672,732,193,870.20 is: 928,412,589,514.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440,998,047.40 : 1,685,665,128,365.80 = 672,732,193,870.20 : x
  2. Step 2: Convert to fraction form
    1,221,440,998,047.40/1,685,665,128,365.80 = 672,732,193,870.20/x
  3. Step 3: Cross multiply
    1,221,440,998,047.40x = 1,685,665,128,365.80 × 672,732,193,870.20
  4. Step 4: Simplify right side
    1,221,440,998,047.40x = 1,134,001,199,936,016,878,665,728
  5. Step 5: Solve for x
    x = 1,134,001,199,936,016,878,665,728/1,221,440,998,047.40
  6. Step 6: Final answer
    x = 928,412,589,514.22

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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.