Home / 840,501,421.31-1,261,517,194.76-447,358,309.19

Finding the Fourth Proportional to 840,501,421.31, 1,261,517,194.76 and 447,358,309.19

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Solution

The fourth proportional to 840,501,421.31, 1,261,517,194.76 and 447,358,309.19 is: 671,444,669.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,501,421.31 : 1,261,517,194.76 = 447,358,309.19 : x
  2. Step 2: Convert to fraction form
    840,501,421.31/1,261,517,194.76 = 447,358,309.19/x
  3. Step 3: Cross multiply
    840,501,421.31x = 1,261,517,194.76 × 447,358,309.19
  4. Step 4: Simplify right side
    840,501,421.31x = 564,350,199,261,945,536
  5. Step 5: Solve for x
    x = 564,350,199,261,945,536/840,501,421.31
  6. Step 6: Final answer
    x = 671,444,669.76

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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.