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Finding the Fourth Proportional to 620,951.88, 930,545.73 and 478,257.42

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Solution

The fourth proportional to 620,951.88, 930,545.73 and 478,257.42 is: 716,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,951.88 : 930,545.73 = 478,257.42 : x
  2. Step 2: Convert to fraction form
    620,951.88/930,545.73 = 478,257.42/x
  3. Step 3: Cross multiply
    620,951.88x = 930,545.73 × 478,257.42
  4. Step 4: Simplify right side
    620,951.88x = 445,040,400,021.82
  5. Step 5: Solve for x
    x = 445,040,400,021.82/620,951.88
  6. Step 6: Final answer
    x = 716,706.74

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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.