Home / 1,221,440,998,066.40-1,685,665,128,391.80-672,732,193,889.20

Finding the Fourth Proportional to 1,221,440,998,066.40, 1,685,665,128,391.80 and 672,732,193,889.20

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Solution

The fourth proportional to 1,221,440,998,066.40, 1,685,665,128,391.80 and 672,732,193,889.20 is: 928,412,589,540.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440,998,066.40 : 1,685,665,128,391.80 = 672,732,193,889.20 : x
  2. Step 2: Convert to fraction form
    1,221,440,998,066.40/1,685,665,128,391.80 = 672,732,193,889.20/x
  3. Step 3: Cross multiply
    1,221,440,998,066.40x = 1,685,665,128,391.80 × 672,732,193,889.20
  4. Step 4: Simplify right side
    1,221,440,998,066.40x = 1,134,001,199,985,535,569,887,232
  5. Step 5: Solve for x
    x = 1,134,001,199,985,535,569,887,232/1,221,440,998,066.40
  6. Step 6: Final answer
    x = 928,412,589,540.32

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Double scale
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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.