Home / 986,435.70-1,479,653.55-355,121.70

Finding the Fourth Proportional to 986,435.70, 1,479,653.55 and 355,121.70

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Solution

The fourth proportional to 986,435.70, 1,479,653.55 and 355,121.70 is: 532,682.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,435.70 : 1,479,653.55 = 355,121.70 : x
  2. Step 2: Convert to fraction form
    986,435.70/1,479,653.55 = 355,121.70/x
  3. Step 3: Cross multiply
    986,435.70x = 1,479,653.55 × 355,121.70
  4. Step 4: Simplify right side
    986,435.70x = 525,457,084,087.04
  5. Step 5: Solve for x
    x = 525,457,084,087.04/986,435.70
  6. Step 6: Final answer
    x = 532,682.55

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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.