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Finding the Fourth Proportional to 874,840.96, 1,207,250.96 and 535,309.20

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Solution

The fourth proportional to 874,840.96, 1,207,250.96 and 535,309.20 is: 738,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,840.96 : 1,207,250.96 = 535,309.20 : x
  2. Step 2: Convert to fraction form
    874,840.96/1,207,250.96 = 535,309.20/x
  3. Step 3: Cross multiply
    874,840.96x = 1,207,250.96 × 535,309.20
  4. Step 4: Simplify right side
    874,840.96x = 646,252,545,596.83
  5. Step 5: Solve for x
    x = 646,252,545,596.83/874,840.96
  6. Step 6: Final answer
    x = 738,708.61

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.