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Finding the Fourth Proportional to 523,576.90, 785,365.35 and 485,085.70

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Solution

The fourth proportional to 523,576.90, 785,365.35 and 485,085.70 is: 727,628.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,576.90 : 785,365.35 = 485,085.70 : x
  2. Step 2: Convert to fraction form
    523,576.90/785,365.35 = 485,085.70/x
  3. Step 3: Cross multiply
    523,576.90x = 785,365.35 × 485,085.70
  4. Step 4: Simplify right side
    523,576.90x = 380,969,500,560.50
  5. Step 5: Solve for x
    x = 380,969,500,560.50/523,576.90
  6. Step 6: Final answer
    x = 727,628.55

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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.