Home / 830,368.40-1,245,487.80-324,831.20

Finding the Fourth Proportional to 830,368.40, 1,245,487.80 and 324,831.20

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Solution

The fourth proportional to 830,368.40, 1,245,487.80 and 324,831.20 is: 487,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,368.40 : 1,245,487.80 = 324,831.20 : x
  2. Step 2: Convert to fraction form
    830,368.40/1,245,487.80 = 324,831.20/x
  3. Step 3: Cross multiply
    830,368.40x = 1,245,487.80 × 324,831.20
  4. Step 4: Simplify right side
    830,368.40x = 404,573,296,659.36
  5. Step 5: Solve for x
    x = 404,573,296,659.36/830,368.40
  6. Step 6: Final answer
    x = 487,221.45

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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.