Home / 738,938.28-1,019,734.25-399,406.53

Finding the Fourth Proportional to 738,938.28, 1,019,734.25 and 399,406.53

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Solution

The fourth proportional to 738,938.28, 1,019,734.25 and 399,406.53 is: 551,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,938.28 : 1,019,734.25 = 399,406.53 : x
  2. Step 2: Convert to fraction form
    738,938.28/1,019,734.25 = 399,406.53/x
  3. Step 3: Cross multiply
    738,938.28x = 1,019,734.25 × 399,406.53
  4. Step 4: Simplify right side
    738,938.28x = 407,288,518,314.65
  5. Step 5: Solve for x
    x = 407,288,518,314.65/738,938.28
  6. Step 6: Final answer
    x = 551,180.70

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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.