Home / 738,876.68-1,019,649.31-399,344.93

Finding the Fourth Proportional to 738,876.68, 1,019,649.31 and 399,344.93

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Solution

The fourth proportional to 738,876.68, 1,019,649.31 and 399,344.93 is: 551,095.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,876.68 : 1,019,649.31 = 399,344.93 : x
  2. Step 2: Convert to fraction form
    738,876.68/1,019,649.31 = 399,344.93/x
  3. Step 3: Cross multiply
    738,876.68x = 1,019,649.31 × 399,344.93
  4. Step 4: Simplify right side
    738,876.68x = 407,191,788,035.42
  5. Step 5: Solve for x
    x = 407,191,788,035.42/738,876.68
  6. Step 6: Final answer
    x = 551,095.73

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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.