Home / 648,017.20-972,171.60-381,640.60

Finding the Fourth Proportional to 648,017.20, 972,171.60 and 381,640.60

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Solution

The fourth proportional to 648,017.20, 972,171.60 and 381,640.60 is: 572,546.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,017.20 : 972,171.60 = 381,640.60 : x
  2. Step 2: Convert to fraction form
    648,017.20/972,171.60 = 381,640.60/x
  3. Step 3: Cross multiply
    648,017.20x = 972,171.60 × 381,640.60
  4. Step 4: Simplify right side
    648,017.20x = 371,020,152,726.96
  5. Step 5: Solve for x
    x = 371,020,152,726.96/648,017.20
  6. Step 6: Final answer
    x = 572,546.77

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1.5x scale

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.