Home / 840,501,400.82-1,261,517,164.07-447,358,288.71

Finding the Fourth Proportional to 840,501,400.82, 1,261,517,164.07 and 447,358,288.71

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Solution

The fourth proportional to 840,501,400.82, 1,261,517,164.07 and 447,358,288.71 is: 671,444,639.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,501,400.82 : 1,261,517,164.07 = 447,358,288.71 : x
  2. Step 2: Convert to fraction form
    840,501,400.82/1,261,517,164.07 = 447,358,288.71/x
  3. Step 3: Cross multiply
    840,501,400.82x = 1,261,517,164.07 × 447,358,288.71
  4. Step 4: Simplify right side
    840,501,400.82x = 564,350,159,694,410,688
  5. Step 5: Solve for x
    x = 564,350,159,694,410,688/840,501,400.82
  6. Step 6: Final answer
    x = 671,444,639.05

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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.