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Finding the Fourth Proportional to 613,824.12, 847,119.81 and 372,116.88

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Solution

The fourth proportional to 613,824.12, 847,119.81 and 372,116.88 is: 513,547.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,824.12 : 847,119.81 = 372,116.88 : x
  2. Step 2: Convert to fraction form
    613,824.12/847,119.81 = 372,116.88/x
  3. Step 3: Cross multiply
    613,824.12x = 847,119.81 × 372,116.88
  4. Step 4: Simplify right side
    613,824.12x = 315,227,576,447.79
  5. Step 5: Solve for x
    x = 315,227,576,447.79/613,824.12
  6. Step 6: Final answer
    x = 513,547.07

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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.