Home / 689,610,301.38-952,204,453.18-555,221,326.23

Finding the Fourth Proportional to 689,610,301.38, 952,204,453.18 and 555,221,326.23

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Solution

The fourth proportional to 689,610,301.38, 952,204,453.18 and 555,221,326.23 is: 766,641,998.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,610,301.38 : 952,204,453.18 = 555,221,326.23 : x
  2. Step 2: Convert to fraction form
    689,610,301.38/952,204,453.18 = 555,221,326.23/x
  3. Step 3: Cross multiply
    689,610,301.38x = 952,204,453.18 × 555,221,326.23
  4. Step 4: Simplify right side
    689,610,301.38x = 528,684,219,335,323,520
  5. Step 5: Solve for x
    x = 528,684,219,335,323,520/689,610,301.38
  6. Step 6: Final answer
    x = 766,641,998.06

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Half scale
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Double scale
Find fourth proportional to 689,610,302.38, 952,204,454.56 and 555,221,327.23
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1.5x scale

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.