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Finding the Fourth Proportional to 670,992.56, 925,995.20 and 384,567.92

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Solution

The fourth proportional to 670,992.56, 925,995.20 and 384,567.92 is: 530,718.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,992.56 : 925,995.20 = 384,567.92 : x
  2. Step 2: Convert to fraction form
    670,992.56/925,995.20 = 384,567.92/x
  3. Step 3: Cross multiply
    670,992.56x = 925,995.20 × 384,567.92
  4. Step 4: Simplify right side
    670,992.56x = 356,108,041,441.17
  5. Step 5: Solve for x
    x = 356,108,041,441.17/670,992.56
  6. Step 6: Final answer
    x = 530,718.32

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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.