Home / 738,992.20-1,019,808.74-399,460.45

Finding the Fourth Proportional to 738,992.20, 1,019,808.74 and 399,460.45

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Solution

The fourth proportional to 738,992.20, 1,019,808.74 and 399,460.45 is: 551,255.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,992.20 : 1,019,808.74 = 399,460.45 : x
  2. Step 2: Convert to fraction form
    738,992.20/1,019,808.74 = 399,460.45/x
  3. Step 3: Cross multiply
    738,992.20x = 1,019,808.74 × 399,460.45
  4. Step 4: Simplify right side
    738,992.20x = 407,373,258,194.33
  5. Step 5: Solve for x
    x = 407,373,258,194.33/738,992.20
  6. Step 6: Final answer
    x = 551,255.15

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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.