Home / 738,898.96-1,019,682.30-399,367.21

Finding the Fourth Proportional to 738,898.96, 1,019,682.30 and 399,367.21

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Solution

The fourth proportional to 738,898.96, 1,019,682.30 and 399,367.21 is: 551,127.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,898.96 : 1,019,682.30 = 399,367.21 : x
  2. Step 2: Convert to fraction form
    738,898.96/1,019,682.30 = 399,367.21/x
  3. Step 3: Cross multiply
    738,898.96x = 1,019,682.30 × 399,367.21
  4. Step 4: Simplify right side
    738,898.96x = 407,227,674,185.80
  5. Step 5: Solve for x
    x = 407,227,674,185.80/738,898.96
  6. Step 6: Final answer
    x = 551,127.69

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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.