Home / 728,118.38-1,004,808.02-405,848.90

Finding the Fourth Proportional to 728,118.38, 1,004,808.02 and 405,848.90

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Solution

The fourth proportional to 728,118.38, 1,004,808.02 and 405,848.90 is: 560,074.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,118.38 : 1,004,808.02 = 405,848.90 : x
  2. Step 2: Convert to fraction form
    728,118.38/1,004,808.02 = 405,848.90/x
  3. Step 3: Cross multiply
    728,118.38x = 1,004,808.02 × 405,848.90
  4. Step 4: Simplify right side
    728,118.38x = 407,800,227,598.93
  5. Step 5: Solve for x
    x = 407,800,227,598.93/728,118.38
  6. Step 6: Final answer
    x = 560,074.07

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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.