Home / 830,112.59-1,245,299.90-290,519.55

Finding the Fourth Proportional to 830,112.59, 1,245,299.90 and 290,519.55

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Solution

The fourth proportional to 830,112.59, 1,245,299.90 and 290,519.55 is: 435,825.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,112.59 : 1,245,299.90 = 290,519.55 : x
  2. Step 2: Convert to fraction form
    830,112.59/1,245,299.90 = 290,519.55/x
  3. Step 3: Cross multiply
    830,112.59x = 1,245,299.90 × 290,519.55
  4. Step 4: Simplify right side
    830,112.59x = 361,783,965,110.45
  5. Step 5: Solve for x
    x = 361,783,965,110.45/830,112.59
  6. Step 6: Final answer
    x = 435,825.18

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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.