Home / 648,187.20-972,856.80-381,614.40

Finding the Fourth Proportional to 648,187.20, 972,856.80 and 381,614.40

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Solution

The fourth proportional to 648,187.20, 972,856.80 and 381,614.40 is: 572,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,187.20 : 972,856.80 = 381,614.40 : x
  2. Step 2: Convert to fraction form
    648,187.20/972,856.80 = 381,614.40/x
  3. Step 3: Cross multiply
    648,187.20x = 972,856.80 × 381,614.40
  4. Step 4: Simplify right side
    648,187.20x = 371,256,164,017.92
  5. Step 5: Solve for x
    x = 371,256,164,017.92/648,187.20
  6. Step 6: Final answer
    x = 572,760.71

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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.