Home / 724,485.40-1,086,728.10-251,013.40

Finding the Fourth Proportional to 724,485.40, 1,086,728.10 and 251,013.40

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Solution

The fourth proportional to 724,485.40, 1,086,728.10 and 251,013.40 is: 376,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,485.40 : 1,086,728.10 = 251,013.40 : x
  2. Step 2: Convert to fraction form
    724,485.40/1,086,728.10 = 251,013.40/x
  3. Step 3: Cross multiply
    724,485.40x = 1,086,728.10 × 251,013.40
  4. Step 4: Simplify right side
    724,485.40x = 272,783,315,256.54
  5. Step 5: Solve for x
    x = 272,783,315,256.54/724,485.40
  6. Step 6: Final answer
    x = 376,520.10

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Half scale
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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.