Home / 1,121,009,720.20-1,681,514,580.30-654,191,945.80

Finding the Fourth Proportional to 1,121,009,720.20, 1,681,514,580.30 and 654,191,945.80

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Solution

The fourth proportional to 1,121,009,720.20, 1,681,514,580.30 and 654,191,945.80 is: 981,287,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,009,720.20 : 1,681,514,580.30 = 654,191,945.80 : x
  2. Step 2: Convert to fraction form
    1,121,009,720.20/1,681,514,580.30 = 654,191,945.80/x
  3. Step 3: Cross multiply
    1,121,009,720.20x = 1,681,514,580.30 × 654,191,945.80
  4. Step 4: Simplify right side
    1,121,009,720.20x = 1,100,033,295,177,527,296
  5. Step 5: Solve for x
    x = 1,100,033,295,177,527,296/1,121,009,720.20
  6. Step 6: Final answer
    x = 981,287,918.70

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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.