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Finding the Fourth Proportional to 628,437.69, 942,804.16 and 207,713.57

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Solution

The fourth proportional to 628,437.69, 942,804.16 and 207,713.57 is: 311,619.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,437.69 : 942,804.16 = 207,713.57 : x
  2. Step 2: Convert to fraction form
    628,437.69/942,804.16 = 207,713.57/x
  3. Step 3: Cross multiply
    628,437.69x = 942,804.16 × 207,713.57
  4. Step 4: Simplify right side
    628,437.69x = 195,833,212,651.15
  5. Step 5: Solve for x
    x = 195,833,212,651.15/628,437.69
  6. Step 6: Final answer
    x = 311,619.14

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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.