Home / 738,938.50-1,019,734.52-399,406.75

Finding the Fourth Proportional to 738,938.50, 1,019,734.52 and 399,406.75

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Solution

The fourth proportional to 738,938.50, 1,019,734.52 and 399,406.75 is: 551,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,938.50 : 1,019,734.52 = 399,406.75 : x
  2. Step 2: Convert to fraction form
    738,938.50/1,019,734.52 = 399,406.75/x
  3. Step 3: Cross multiply
    738,938.50x = 1,019,734.52 × 399,406.75
  4. Step 4: Simplify right side
    738,938.50x = 407,288,845,949.64
  5. Step 5: Solve for x
    x = 407,288,845,949.64/738,938.50
  6. Step 6: Final answer
    x = 551,180.98

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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.