Home / 919,449.40-1,379,174.10-288,362.20

Finding the Fourth Proportional to 919,449.40, 1,379,174.10 and 288,362.20

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Solution

The fourth proportional to 919,449.40, 1,379,174.10 and 288,362.20 is: 432,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,449.40 : 1,379,174.10 = 288,362.20 : x
  2. Step 2: Convert to fraction form
    919,449.40/1,379,174.10 = 288,362.20/x
  3. Step 3: Cross multiply
    919,449.40x = 1,379,174.10 × 288,362.20
  4. Step 4: Simplify right side
    919,449.40x = 397,701,677,659.02
  5. Step 5: Solve for x
    x = 397,701,677,659.02/919,449.40
  6. Step 6: Final answer
    x = 432,543.30

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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.