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Finding the Fourth Proportional to 520,983, 781,576.04 and 221,460.12

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Solution

The fourth proportional to 520,983, 781,576.04 and 221,460.12 is: 332,233.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,983 : 781,576.04 = 221,460.12 : x
  2. Step 2: Convert to fraction form
    520,983/781,576.04 = 221,460.12/x
  3. Step 3: Cross multiply
    520,983x = 781,576.04 × 221,460.12
  4. Step 4: Simplify right side
    520,983x = 173,087,923,607.53
  5. Step 5: Solve for x
    x = 173,087,923,607.53/520,983
  6. Step 6: Final answer
    x = 332,233.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.