Home / 648,124.80-972,187.20-254,140.80

Finding the Fourth Proportional to 648,124.80, 972,187.20 and 254,140.80

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Solution

The fourth proportional to 648,124.80, 972,187.20 and 254,140.80 is: 381,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,124.80 : 972,187.20 = 254,140.80 : x
  2. Step 2: Convert to fraction form
    648,124.80/972,187.20 = 254,140.80/x
  3. Step 3: Cross multiply
    648,124.80x = 972,187.20 × 254,140.80
  4. Step 4: Simplify right side
    648,124.80x = 247,072,432,757.76
  5. Step 5: Solve for x
    x = 247,072,432,757.76/648,124.80
  6. Step 6: Final answer
    x = 381,211.20

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Double scale
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Similar ratio
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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.