Home / 919,463.40-1,379,195.10-288,376.20

Finding the Fourth Proportional to 919,463.40, 1,379,195.10 and 288,376.20

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Solution

The fourth proportional to 919,463.40, 1,379,195.10 and 288,376.20 is: 432,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,463.40 : 1,379,195.10 = 288,376.20 : x
  2. Step 2: Convert to fraction form
    919,463.40/1,379,195.10 = 288,376.20/x
  3. Step 3: Cross multiply
    919,463.40x = 1,379,195.10 × 288,376.20
  4. Step 4: Simplify right side
    919,463.40x = 397,727,041,996.62
  5. Step 5: Solve for x
    x = 397,727,041,996.62/919,463.40
  6. Step 6: Final answer
    x = 432,564.30

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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.