Home / 738,983.60-1,019,796.92-399,451.85

Finding the Fourth Proportional to 738,983.60, 1,019,796.92 and 399,451.85

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Solution

The fourth proportional to 738,983.60, 1,019,796.92 and 399,451.85 is: 551,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,983.60 : 1,019,796.92 = 399,451.85 : x
  2. Step 2: Convert to fraction form
    738,983.60/1,019,796.92 = 399,451.85/x
  3. Step 3: Cross multiply
    738,983.60x = 1,019,796.92 × 399,451.85
  4. Step 4: Simplify right side
    738,983.60x = 407,359,771,965.81
  5. Step 5: Solve for x
    x = 407,359,771,965.81/738,983.60
  6. Step 6: Final answer
    x = 551,243.32

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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.