Home / 558,772,840.40-771,123,990.86-320,661,586.09

Finding the Fourth Proportional to 558,772,840.40, 771,123,990.86 and 320,661,586.09

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Solution

The fourth proportional to 558,772,840.40, 771,123,990.86 and 320,661,586.09 is: 442,523,014.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,772,840.40 : 771,123,990.86 = 320,661,586.09 : x
  2. Step 2: Convert to fraction form
    558,772,840.40/771,123,990.86 = 320,661,586.09/x
  3. Step 3: Cross multiply
    558,772,840.40x = 771,123,990.86 × 320,661,586.09
  4. Step 4: Simplify right side
    558,772,840.40x = 247,269,841,981,218,240
  5. Step 5: Solve for x
    x = 247,269,841,981,218,240/558,772,840.40
  6. Step 6: Final answer
    x = 442,523,014.91

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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.