Home / 983,760.40-1,475,640.60-485,059.60

Finding the Fourth Proportional to 983,760.40, 1,475,640.60 and 485,059.60

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Solution

The fourth proportional to 983,760.40, 1,475,640.60 and 485,059.60 is: 727,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,760.40 : 1,475,640.60 = 485,059.60 : x
  2. Step 2: Convert to fraction form
    983,760.40/1,475,640.60 = 485,059.60/x
  3. Step 3: Cross multiply
    983,760.40x = 1,475,640.60 × 485,059.60
  4. Step 4: Simplify right side
    983,760.40x = 715,773,639,179.76
  5. Step 5: Solve for x
    x = 715,773,639,179.76/983,760.40
  6. Step 6: Final answer
    x = 727,589.40

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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.