Home / 1,285,488,837.84-1,773,994,033.38-721,098,828.48

Finding the Fourth Proportional to 1,285,488,837.84, 1,773,994,033.38 and 721,098,828.48

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Solution

The fourth proportional to 1,285,488,837.84, 1,773,994,033.38 and 721,098,828.48 is: 995,127,286.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,488,837.84 : 1,773,994,033.38 = 721,098,828.48 : x
  2. Step 2: Convert to fraction form
    1,285,488,837.84/1,773,994,033.38 = 721,098,828.48/x
  3. Step 3: Cross multiply
    1,285,488,837.84x = 1,773,994,033.38 × 721,098,828.48
  4. Step 4: Simplify right side
    1,285,488,837.84x = 1,279,225,019,200,828,160
  5. Step 5: Solve for x
    x = 1,279,225,019,200,828,160/1,285,488,837.84
  6. Step 6: Final answer
    x = 995,127,286.64

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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.