Home / 403,935.40-605,514.30-313,928.20

Finding the Fourth Proportional to 403,935.40, 605,514.30 and 313,928.20

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Solution

The fourth proportional to 403,935.40, 605,514.30 and 313,928.20 is: 470,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,935.40 : 605,514.30 = 313,928.20 : x
  2. Step 2: Convert to fraction form
    403,935.40/605,514.30 = 313,928.20/x
  3. Step 3: Cross multiply
    403,935.40x = 605,514.30 × 313,928.20
  4. Step 4: Simplify right side
    403,935.40x = 190,088,014,273.26
  5. Step 5: Solve for x
    x = 190,088,014,273.26/403,935.40
  6. Step 6: Final answer
    x = 470,590.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.