Home / 669,084.40-1,003,626.60-385,649.20

Finding the Fourth Proportional to 669,084.40, 1,003,626.60 and 385,649.20

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Solution

The fourth proportional to 669,084.40, 1,003,626.60 and 385,649.20 is: 578,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,084.40 : 1,003,626.60 = 385,649.20 : x
  2. Step 2: Convert to fraction form
    669,084.40/1,003,626.60 = 385,649.20/x
  3. Step 3: Cross multiply
    669,084.40x = 1,003,626.60 × 385,649.20
  4. Step 4: Simplify right side
    669,084.40x = 387,047,795,388.72
  5. Step 5: Solve for x
    x = 387,047,795,388.72/669,084.40
  6. Step 6: Final answer
    x = 578,473.80

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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.