Home / 1,288,342.92-1,931,914.38-478,163.10

Finding the Fourth Proportional to 1,288,342.92, 1,931,914.38 and 478,163.10

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Solution

The fourth proportional to 1,288,342.92, 1,931,914.38 and 478,163.10 is: 717,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,342.92 : 1,931,914.38 = 478,163.10 : x
  2. Step 2: Convert to fraction form
    1,288,342.92/1,931,914.38 = 478,163.10/x
  3. Step 3: Cross multiply
    1,288,342.92x = 1,931,914.38 × 478,163.10
  4. Step 4: Simplify right side
    1,288,342.92x = 923,770,168,875.38
  5. Step 5: Solve for x
    x = 923,770,168,875.38/1,288,342.92
  6. Step 6: Final answer
    x = 717,021.96

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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.