Home / 728,279.11-1,005,085.02-401,656.01

Finding the Fourth Proportional to 728,279.11, 1,005,085.02 and 401,656.01

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Solution

The fourth proportional to 728,279.11, 1,005,085.02 and 401,656.01 is: 554,318.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,279.11 : 1,005,085.02 = 401,656.01 : x
  2. Step 2: Convert to fraction form
    728,279.11/1,005,085.02 = 401,656.01/x
  3. Step 3: Cross multiply
    728,279.11x = 1,005,085.02 × 401,656.01
  4. Step 4: Simplify right side
    728,279.11x = 403,698,442,922.79
  5. Step 5: Solve for x
    x = 403,698,442,922.79/728,279.11
  6. Step 6: Final answer
    x = 554,318.31

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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.