Home / 663,479,187.96-915,783,375.45-385,110,392.16

Finding the Fourth Proportional to 663,479,187.96, 915,783,375.45 and 385,110,392.16

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Solution

The fourth proportional to 663,479,187.96, 915,783,375.45 and 385,110,392.16 is: 531,558,037.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,479,187.96 : 915,783,375.45 = 385,110,392.16 : x
  2. Step 2: Convert to fraction form
    663,479,187.96/915,783,375.45 = 385,110,392.16/x
  3. Step 3: Cross multiply
    663,479,187.96x = 915,783,375.45 × 385,110,392.16
  4. Step 4: Simplify right side
    663,479,187.96x = 352,677,694,853,158,080
  5. Step 5: Solve for x
    x = 352,677,694,853,158,080/663,479,187.96
  6. Step 6: Final answer
    x = 531,558,037.17

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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.