Home / 738,931.71-1,019,725.20-399,399.96

Finding the Fourth Proportional to 738,931.71, 1,019,725.20 and 399,399.96

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Solution

The fourth proportional to 738,931.71, 1,019,725.20 and 399,399.96 is: 551,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,931.71 : 1,019,725.20 = 399,399.96 : x
  2. Step 2: Convert to fraction form
    738,931.71/1,019,725.20 = 399,399.96/x
  3. Step 3: Cross multiply
    738,931.71x = 1,019,725.20 × 399,399.96
  4. Step 4: Simplify right side
    738,931.71x = 407,278,207,914.96
  5. Step 5: Solve for x
    x = 407,278,207,914.96/738,931.71
  6. Step 6: Final answer
    x = 551,171.64

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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.