Home / 738,961.64-1,019,766.21-399,430.16

Finding the Fourth Proportional to 738,961.64, 1,019,766.21 and 399,430.16

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Solution

The fourth proportional to 738,961.64, 1,019,766.21 and 399,430.16 is: 551,213.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,961.64 : 1,019,766.21 = 399,430.16 : x
  2. Step 2: Convert to fraction form
    738,961.64/1,019,766.21 = 399,430.16/x
  3. Step 3: Cross multiply
    738,961.64x = 1,019,766.21 × 399,430.16
  4. Step 4: Simplify right side
    738,961.64x = 407,325,380,422.89
  5. Step 5: Solve for x
    x = 407,325,380,422.89/738,961.64
  6. Step 6: Final answer
    x = 551,213.16

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Double scale
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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.