Home / 1,098,412,728.80-1,515,382,364.64-621,993,732.80

Finding the Fourth Proportional to 1,098,412,728.80, 1,515,382,364.64 and 621,993,732.80

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Solution

The fourth proportional to 1,098,412,728.80, 1,515,382,364.64 and 621,993,732.80 is: 858,109,441.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,412,728.80 : 1,515,382,364.64 = 621,993,732.80 : x
  2. Step 2: Convert to fraction form
    1,098,412,728.80/1,515,382,364.64 = 621,993,732.80/x
  3. Step 3: Cross multiply
    1,098,412,728.80x = 1,515,382,364.64 × 621,993,732.80
  4. Step 4: Simplify right side
    1,098,412,728.80x = 942,558,333,601,724,288
  5. Step 5: Solve for x
    x = 942,558,333,601,724,288/1,098,412,728.80
  6. Step 6: Final answer
    x = 858,109,441.82

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Double scale
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1.5x scale

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.