Home / 1,121,010,428.70-1,681,515,643.05-654,192,654.30

Finding the Fourth Proportional to 1,121,010,428.70, 1,681,515,643.05 and 654,192,654.30

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Solution

The fourth proportional to 1,121,010,428.70, 1,681,515,643.05 and 654,192,654.30 is: 981,288,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,428.70 : 1,681,515,643.05 = 654,192,654.30 : x
  2. Step 2: Convert to fraction form
    1,121,010,428.70/1,681,515,643.05 = 654,192,654.30/x
  3. Step 3: Cross multiply
    1,121,010,428.70x = 1,681,515,643.05 × 654,192,654.30
  4. Step 4: Simplify right side
    1,121,010,428.70x = 1,100,035,181,773,850,752
  5. Step 5: Solve for x
    x = 1,100,035,181,773,850,752/1,121,010,428.70
  6. Step 6: Final answer
    x = 981,288,981.45

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Double scale
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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.