Home / 790,538.40-1,186,585.20-391,629.60

Finding the Fourth Proportional to 790,538.40, 1,186,585.20 and 391,629.60

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Solution

The fourth proportional to 790,538.40, 1,186,585.20 and 391,629.60 is: 587,829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,538.40 : 1,186,585.20 = 391,629.60 : x
  2. Step 2: Convert to fraction form
    790,538.40/1,186,585.20 = 391,629.60/x
  3. Step 3: Cross multiply
    790,538.40x = 1,186,585.20 × 391,629.60
  4. Step 4: Simplify right side
    790,538.40x = 464,701,887,241.92
  5. Step 5: Solve for x
    x = 464,701,887,241.92/790,538.40
  6. Step 6: Final answer
    x = 587,829.62

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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.