Home / 830,857.40-1,246,221.30-325,320.20

Finding the Fourth Proportional to 830,857.40, 1,246,221.30 and 325,320.20

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Solution

The fourth proportional to 830,857.40, 1,246,221.30 and 325,320.20 is: 487,954.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,857.40 : 1,246,221.30 = 325,320.20 : x
  2. Step 2: Convert to fraction form
    830,857.40/1,246,221.30 = 325,320.20/x
  3. Step 3: Cross multiply
    830,857.40x = 1,246,221.30 × 325,320.20
  4. Step 4: Simplify right side
    830,857.40x = 405,420,962,560.26
  5. Step 5: Solve for x
    x = 405,420,962,560.26/830,857.40
  6. Step 6: Final answer
    x = 487,954.93

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1.5x scale

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.