Home / 830,272.80-1,245,409.20-231,326.40

Finding the Fourth Proportional to 830,272.80, 1,245,409.20 and 231,326.40

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Solution

The fourth proportional to 830,272.80, 1,245,409.20 and 231,326.40 is: 346,989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,272.80 : 1,245,409.20 = 231,326.40 : x
  2. Step 2: Convert to fraction form
    830,272.80/1,245,409.20 = 231,326.40/x
  3. Step 3: Cross multiply
    830,272.80x = 1,245,409.20 × 231,326.40
  4. Step 4: Simplify right side
    830,272.80x = 288,096,026,762.88
  5. Step 5: Solve for x
    x = 288,096,026,762.88/830,272.80
  6. Step 6: Final answer
    x = 346,989.60

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Double scale
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Similar ratio
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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.