Home / 1,443,214,071.51-1,991,635,418.88-783,164,349.51

Finding the Fourth Proportional to 1,443,214,071.51, 1,991,635,418.88 and 783,164,349.51

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Solution

The fourth proportional to 1,443,214,071.51, 1,991,635,418.88 and 783,164,349.51 is: 1,080,766,802.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,214,071.51 : 1,991,635,418.88 = 783,164,349.51 : x
  2. Step 2: Convert to fraction form
    1,443,214,071.51/1,991,635,418.88 = 783,164,349.51/x
  3. Step 3: Cross multiply
    1,443,214,071.51x = 1,991,635,418.88 × 783,164,349.51
  4. Step 4: Simplify right side
    1,443,214,071.51x = 1,559,777,857,288,231,680
  5. Step 5: Solve for x
    x = 1,559,777,857,288,231,680/1,443,214,071.51
  6. Step 6: Final answer
    x = 1,080,766,802.43

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Double scale
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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.