Home / 390,916,380.34-585,481,524.45-186,587,944.66

Finding the Fourth Proportional to 390,916,380.34, 585,481,524.45 and 186,587,944.66

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Solution

The fourth proportional to 390,916,380.34, 585,481,524.45 and 186,587,944.66 is: 279,455,657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,916,380.34 : 585,481,524.45 = 186,587,944.66 : x
  2. Step 2: Convert to fraction form
    390,916,380.34/585,481,524.45 = 186,587,944.66/x
  3. Step 3: Cross multiply
    390,916,380.34x = 585,481,524.45 × 186,587,944.66
  4. Step 4: Simplify right side
    390,916,380.34x = 109,243,794,283,529,040
  5. Step 5: Solve for x
    x = 109,243,794,283,529,040/390,916,380.34
  6. Step 6: Final answer
    x = 279,455,657.98

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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.