Home / 985,653.21-1,478,479.83-386,896.35

Finding the Fourth Proportional to 985,653.21, 1,478,479.83 and 386,896.35

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Solution

The fourth proportional to 985,653.21, 1,478,479.83 and 386,896.35 is: 580,344.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,653.21 : 1,478,479.83 = 386,896.35 : x
  2. Step 2: Convert to fraction form
    985,653.21/1,478,479.83 = 386,896.35/x
  3. Step 3: Cross multiply
    985,653.21x = 1,478,479.83 × 386,896.35
  4. Step 4: Simplify right side
    985,653.21x = 572,018,449,775.62
  5. Step 5: Solve for x
    x = 572,018,449,775.62/985,653.21
  6. Step 6: Final answer
    x = 580,344.53

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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.