Home / 738,906.37-1,019,690.30-399,374.62

Finding the Fourth Proportional to 738,906.37, 1,019,690.30 and 399,374.62

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Solution

The fourth proportional to 738,906.37, 1,019,690.30 and 399,374.62 is: 551,136.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,906.37 : 1,019,690.30 = 399,374.62 : x
  2. Step 2: Convert to fraction form
    738,906.37/1,019,690.30 = 399,374.62/x
  3. Step 3: Cross multiply
    738,906.37x = 1,019,690.30 × 399,374.62
  4. Step 4: Simplify right side
    738,906.37x = 407,238,426,080.19
  5. Step 5: Solve for x
    x = 407,238,426,080.19/738,906.37
  6. Step 6: Final answer
    x = 551,136.71

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Double scale
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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.