Home / 1,121,010,444.70-1,681,515,667.05-654,192,670.30

Finding the Fourth Proportional to 1,121,010,444.70, 1,681,515,667.05 and 654,192,670.30

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Solution

The fourth proportional to 1,121,010,444.70, 1,681,515,667.05 and 654,192,670.30 is: 981,289,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,444.70 : 1,681,515,667.05 = 654,192,670.30 : x
  2. Step 2: Convert to fraction form
    1,121,010,444.70/1,681,515,667.05 = 654,192,670.30/x
  3. Step 3: Cross multiply
    1,121,010,444.70x = 1,681,515,667.05 × 654,192,670.30
  4. Step 4: Simplify right side
    1,121,010,444.70x = 1,100,035,224,378,725,120
  5. Step 5: Solve for x
    x = 1,100,035,224,378,725,120/1,121,010,444.70
  6. Step 6: Final answer
    x = 981,289,005.45

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Double scale
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Similar ratio
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1.5x scale

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.