Home / 425,541,090.47-639,218,920.85-400,661,431.31

Finding the Fourth Proportional to 425,541,090.47, 639,218,920.85 and 400,661,431.31

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Solution

The fourth proportional to 425,541,090.47, 639,218,920.85 and 400,661,431.31 is: 601,846,386.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,541,090.47 : 639,218,920.85 = 400,661,431.31 : x
  2. Step 2: Convert to fraction form
    425,541,090.47/639,218,920.85 = 400,661,431.31/x
  3. Step 3: Cross multiply
    425,541,090.47x = 639,218,920.85 × 400,661,431.31
  4. Step 4: Simplify right side
    425,541,090.47x = 256,110,367,742,995,232
  5. Step 5: Solve for x
    x = 256,110,367,742,995,232/425,541,090.47
  6. Step 6: Final answer
    x = 601,846,386.83

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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.