Home / 1,221,440,998,063.90-1,685,665,128,388.50-672,732,193,886.76

Finding the Fourth Proportional to 1,221,440,998,063.90, 1,685,665,128,388.50 and 672,732,193,886.76

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Solution

The fourth proportional to 1,221,440,998,063.90, 1,685,665,128,388.50 and 672,732,193,886.76 is: 928,412,589,537.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440,998,063.90 : 1,685,665,128,388.50 = 672,732,193,886.76 : x
  2. Step 2: Convert to fraction form
    1,221,440,998,063.90/1,685,665,128,388.50 = 672,732,193,886.76/x
  3. Step 3: Cross multiply
    1,221,440,998,063.90x = 1,685,665,128,388.50 × 672,732,193,886.76
  4. Step 4: Simplify right side
    1,221,440,998,063.90x = 1,134,001,199,979,202,640,609,280
  5. Step 5: Solve for x
    x = 1,134,001,199,979,202,640,609,280/1,221,440,998,063.90
  6. Step 6: Final answer
    x = 928,412,589,537.03

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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.