Home / 669,388.17-1,004,117.31-509,714.54

Finding the Fourth Proportional to 669,388.17, 1,004,117.31 and 509,714.54

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Solution

The fourth proportional to 669,388.17, 1,004,117.31 and 509,714.54 is: 764,598.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,388.17 : 1,004,117.31 = 509,714.54 : x
  2. Step 2: Convert to fraction form
    669,388.17/1,004,117.31 = 509,714.54/x
  3. Step 3: Cross multiply
    669,388.17x = 1,004,117.31 × 509,714.54
  4. Step 4: Simplify right side
    669,388.17x = 511,813,187,752.10
  5. Step 5: Solve for x
    x = 511,813,187,752.10/669,388.17
  6. Step 6: Final answer
    x = 764,598.50

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Double scale
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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.