Home / 1,991,613.66-2,987,422.32-853,637.40

Finding the Fourth Proportional to 1,991,613.66, 2,987,422.32 and 853,637.40

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Solution

The fourth proportional to 1,991,613.66, 2,987,422.32 and 853,637.40 is: 1,280,456.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,613.66 : 2,987,422.32 = 853,637.40 : x
  2. Step 2: Convert to fraction form
    1,991,613.66/2,987,422.32 = 853,637.40/x
  3. Step 3: Cross multiply
    1,991,613.66x = 2,987,422.32 × 853,637.40
  4. Step 4: Simplify right side
    1,991,613.66x = 2,550,175,421,946.77
  5. Step 5: Solve for x
    x = 2,550,175,421,946.77/1,991,613.66
  6. Step 6: Final answer
    x = 1,280,456.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.