Home / 528,431.32-729,364.92-324,530.84

Finding the Fourth Proportional to 528,431.32, 729,364.92 and 324,530.84

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Solution

The fourth proportional to 528,431.32, 729,364.92 and 324,530.84 is: 447,932.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,431.32 : 729,364.92 = 324,530.84 : x
  2. Step 2: Convert to fraction form
    528,431.32/729,364.92 = 324,530.84/x
  3. Step 3: Cross multiply
    528,431.32x = 729,364.92 × 324,530.84
  4. Step 4: Simplify right side
    528,431.32x = 236,701,410,154.13
  5. Step 5: Solve for x
    x = 236,701,410,154.13/528,431.32
  6. Step 6: Final answer
    x = 447,932.21

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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.