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Finding the Fourth Proportional to 566,635.89, 781,955.72 and 311,987.07

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Solution

The fourth proportional to 566,635.89, 781,955.72 and 311,987.07 is: 430,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,635.89 : 781,955.72 = 311,987.07 : x
  2. Step 2: Convert to fraction form
    566,635.89/781,955.72 = 311,987.07/x
  3. Step 3: Cross multiply
    566,635.89x = 781,955.72 × 311,987.07
  4. Step 4: Simplify right side
    566,635.89x = 243,960,073,952.54
  5. Step 5: Solve for x
    x = 243,960,073,952.54/566,635.89
  6. Step 6: Final answer
    x = 430,541.16

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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.