Home / 1,245,462,883.67-1,718,755,081.68-680,948,421.21

Finding the Fourth Proportional to 1,245,462,883.67, 1,718,755,081.68 and 680,948,421.21

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Solution

The fourth proportional to 1,245,462,883.67, 1,718,755,081.68 and 680,948,421.21 is: 939,717,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,462,883.67 : 1,718,755,081.68 = 680,948,421.21 : x
  2. Step 2: Convert to fraction form
    1,245,462,883.67/1,718,755,081.68 = 680,948,421.21/x
  3. Step 3: Cross multiply
    1,245,462,883.67x = 1,718,755,081.68 × 680,948,421.21
  4. Step 4: Simplify right side
    1,245,462,883.67x = 1,170,383,559,316,660,736
  5. Step 5: Solve for x
    x = 1,170,383,559,316,660,736/1,245,462,883.67
  6. Step 6: Final answer
    x = 939,717,734.40

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1.5x scale

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.