Home / 1,221,440,998,071.60-1,685,665,128,399.10-672,732,193,894.40

Finding the Fourth Proportional to 1,221,440,998,071.60, 1,685,665,128,399.10 and 672,732,193,894.40

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Solution

The fourth proportional to 1,221,440,998,071.60, 1,685,665,128,399.10 and 672,732,193,894.40 is: 928,412,589,547.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440,998,071.60 : 1,685,665,128,399.10 = 672,732,193,894.40 : x
  2. Step 2: Convert to fraction form
    1,221,440,998,071.60/1,685,665,128,399.10 = 672,732,193,894.40/x
  3. Step 3: Cross multiply
    1,221,440,998,071.60x = 1,685,665,128,399.10 × 672,732,193,894.40
  4. Step 4: Simplify right side
    1,221,440,998,071.60x = 1,134,001,199,999,212,087,934,976
  5. Step 5: Solve for x
    x = 1,134,001,199,999,212,087,934,976/1,221,440,998,071.60
  6. Step 6: Final answer
    x = 928,412,589,547.56

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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.