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Finding the Fourth Proportional to 874,647.15, 1,311,970.71 and 500,407.71

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Solution

The fourth proportional to 874,647.15, 1,311,970.71 and 500,407.71 is: 750,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,647.15 : 1,311,970.71 = 500,407.71 : x
  2. Step 2: Convert to fraction form
    874,647.15/1,311,970.71 = 500,407.71/x
  3. Step 3: Cross multiply
    874,647.15x = 1,311,970.71 × 500,407.71
  4. Step 4: Simplify right side
    874,647.15x = 656,520,258,578.17
  5. Step 5: Solve for x
    x = 656,520,258,578.17/874,647.15
  6. Step 6: Final answer
    x = 750,611.56

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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.