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Finding the Fourth Proportional to 660,580.62, 911,545.60 and 366,238.21

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Solution

The fourth proportional to 660,580.62, 911,545.60 and 366,238.21 is: 505,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,580.62 : 911,545.60 = 366,238.21 : x
  2. Step 2: Convert to fraction form
    660,580.62/911,545.60 = 366,238.21/x
  3. Step 3: Cross multiply
    660,580.62x = 911,545.60 × 366,238.21
  4. Step 4: Simplify right side
    660,580.62x = 333,842,828,877.38
  5. Step 5: Solve for x
    x = 333,842,828,877.38/660,580.62
  6. Step 6: Final answer
    x = 505,377.87

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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.