Home / 387,648,610.40-534,961,389.44-211,436,561.12

Finding the Fourth Proportional to 387,648,610.40, 534,961,389.44 and 211,436,561.12

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Solution

The fourth proportional to 387,648,610.40, 534,961,389.44 and 211,436,561.12 is: 291,785,894.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,648,610.40 : 534,961,389.44 = 211,436,561.12 : x
  2. Step 2: Convert to fraction form
    387,648,610.40/534,961,389.44 = 211,436,561.12/x
  3. Step 3: Cross multiply
    387,648,610.40x = 534,961,389.44 × 211,436,561.12
  4. Step 4: Simplify right side
    387,648,610.40x = 113,110,396,515,170,688
  5. Step 5: Solve for x
    x = 113,110,396,515,170,688/387,648,610.40
  6. Step 6: Final answer
    x = 291,785,894.44

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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.