Home / 428,384.16-591,185.28-258,585.12

Finding the Fourth Proportional to 428,384.16, 591,185.28 and 258,585.12

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Solution

The fourth proportional to 428,384.16, 591,185.28 and 258,585.12 is: 356,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,384.16 : 591,185.28 = 258,585.12 : x
  2. Step 2: Convert to fraction form
    428,384.16/591,185.28 = 258,585.12/x
  3. Step 3: Cross multiply
    428,384.16x = 591,185.28 × 258,585.12
  4. Step 4: Simplify right side
    428,384.16x = 152,871,716,571.03
  5. Step 5: Solve for x
    x = 152,871,716,571.03/428,384.16
  6. Step 6: Final answer
    x = 356,856.60

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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.