Home / 425,665,401.52-638,191,665.65-261,564,115.54

Finding the Fourth Proportional to 425,665,401.52, 638,191,665.65 and 261,564,115.54

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Solution

The fourth proportional to 425,665,401.52, 638,191,665.65 and 261,564,115.54 is: 392,157,873.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,665,401.52 : 638,191,665.65 = 261,564,115.54 : x
  2. Step 2: Convert to fraction form
    425,665,401.52/638,191,665.65 = 261,564,115.54/x
  3. Step 3: Cross multiply
    425,665,401.52x = 638,191,665.65 × 261,564,115.54
  4. Step 4: Simplify right side
    425,665,401.52x = 166,928,038,569,433,824
  5. Step 5: Solve for x
    x = 166,928,038,569,433,824/425,665,401.52
  6. Step 6: Final answer
    x = 392,157,873.23

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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.