Home / 666,982.65-920,435.07-361,057.53

Finding the Fourth Proportional to 666,982.65, 920,435.07 and 361,057.53

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Solution

The fourth proportional to 666,982.65, 920,435.07 and 361,057.53 is: 498,258.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,982.65 : 920,435.07 = 361,057.53 : x
  2. Step 2: Convert to fraction form
    666,982.65/920,435.07 = 361,057.53/x
  3. Step 3: Cross multiply
    666,982.65x = 920,435.07 × 361,057.53
  4. Step 4: Simplify right side
    666,982.65x = 332,330,012,899.58
  5. Step 5: Solve for x
    x = 332,330,012,899.58/666,982.65
  6. Step 6: Final answer
    x = 498,258.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.