Home / 699,742.16-965,665.48-397,979.60

Finding the Fourth Proportional to 699,742.16, 965,665.48 and 397,979.60

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Solution

The fourth proportional to 699,742.16, 965,665.48 and 397,979.60 is: 549,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,742.16 : 965,665.48 = 397,979.60 : x
  2. Step 2: Convert to fraction form
    699,742.16/965,665.48 = 397,979.60/x
  3. Step 3: Cross multiply
    699,742.16x = 965,665.48 × 397,979.60
  4. Step 4: Simplify right side
    699,742.16x = 384,315,161,464.21
  5. Step 5: Solve for x
    x = 384,315,161,464.21/699,742.16
  6. Step 6: Final answer
    x = 549,223.96

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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.