Home / 660,442.13-990,804.33-205,023.31

Finding the Fourth Proportional to 660,442.13, 990,804.33 and 205,023.31

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Solution

The fourth proportional to 660,442.13, 990,804.33 and 205,023.31 is: 307,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,442.13 : 990,804.33 = 205,023.31 : x
  2. Step 2: Convert to fraction form
    660,442.13/990,804.33 = 205,023.31/x
  3. Step 3: Cross multiply
    660,442.13x = 990,804.33 × 205,023.31
  4. Step 4: Simplify right side
    660,442.13x = 203,137,983,298.93
  5. Step 5: Solve for x
    x = 203,137,983,298.93/660,442.13
  6. Step 6: Final answer
    x = 307,578.78

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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.