Home / 1,296,169,080-1,788,730,126.56-709,445,618.88

Finding the Fourth Proportional to 1,296,169,080, 1,788,730,126.56 and 709,445,618.88

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Solution

The fourth proportional to 1,296,169,080, 1,788,730,126.56 and 709,445,618.88 is: 979,044,147.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,169,080 : 1,788,730,126.56 = 709,445,618.88 : x
  2. Step 2: Convert to fraction form
    1,296,169,080/1,788,730,126.56 = 709,445,618.88/x
  3. Step 3: Cross multiply
    1,296,169,080x = 1,788,730,126.56 × 709,445,618.88
  4. Step 4: Simplify right side
    1,296,169,080x = 1,269,006,751,646,659,840
  5. Step 5: Solve for x
    x = 1,269,006,751,646,659,840/1,296,169,080
  6. Step 6: Final answer
    x = 979,044,147.27

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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.