Home / 687,259.06-948,464.85-385,472.50

Finding the Fourth Proportional to 687,259.06, 948,464.85 and 385,472.50

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Solution

The fourth proportional to 687,259.06, 948,464.85 and 385,472.50 is: 531,978.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,259.06 : 948,464.85 = 385,472.50 : x
  2. Step 2: Convert to fraction form
    687,259.06/948,464.85 = 385,472.50/x
  3. Step 3: Cross multiply
    687,259.06x = 948,464.85 × 385,472.50
  4. Step 4: Simplify right side
    687,259.06x = 365,607,116,891.63
  5. Step 5: Solve for x
    x = 365,607,116,891.63/687,259.06
  6. Step 6: Final answer
    x = 531,978.61

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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.