Home / 728,499.65-1,005,341.90-401,850.14

Finding the Fourth Proportional to 728,499.65, 1,005,341.90 and 401,850.14

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Solution

The fourth proportional to 728,499.65, 1,005,341.90 and 401,850.14 is: 554,560.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,499.65 : 1,005,341.90 = 401,850.14 : x
  2. Step 2: Convert to fraction form
    728,499.65/1,005,341.90 = 401,850.14/x
  3. Step 3: Cross multiply
    728,499.65x = 1,005,341.90 × 401,850.14
  4. Step 4: Simplify right side
    728,499.65x = 403,996,776,226.91
  5. Step 5: Solve for x
    x = 403,996,776,226.91/728,499.65
  6. Step 6: Final answer
    x = 554,560.02

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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.