Home / 669,809.80-1,004,714.70-385,208.20

Finding the Fourth Proportional to 669,809.80, 1,004,714.70 and 385,208.20

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Solution

The fourth proportional to 669,809.80, 1,004,714.70 and 385,208.20 is: 577,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,809.80 : 1,004,714.70 = 385,208.20 : x
  2. Step 2: Convert to fraction form
    669,809.80/1,004,714.70 = 385,208.20/x
  3. Step 3: Cross multiply
    669,809.80x = 1,004,714.70 × 385,208.20
  4. Step 4: Simplify right side
    669,809.80x = 387,024,341,100.54
  5. Step 5: Solve for x
    x = 387,024,341,100.54/669,809.80
  6. Step 6: Final answer
    x = 577,812.30

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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.