Home / 728,960.32-1,005,965.67-406,670.41

Finding the Fourth Proportional to 728,960.32, 1,005,965.67 and 406,670.41

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Solution

The fourth proportional to 728,960.32, 1,005,965.67 and 406,670.41 is: 561,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,960.32 : 1,005,965.67 = 406,670.41 : x
  2. Step 2: Convert to fraction form
    728,960.32/1,005,965.67 = 406,670.41/x
  3. Step 3: Cross multiply
    728,960.32x = 1,005,965.67 × 406,670.41
  4. Step 4: Simplify right side
    728,960.32x = 409,096,471,464.83
  5. Step 5: Solve for x
    x = 409,096,471,464.83/728,960.32
  6. Step 6: Final answer
    x = 561,205.40

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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.