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Finding the Fourth Proportional to 644,096.46, 887,390.85 and 498,401.22

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Solution

The fourth proportional to 644,096.46, 887,390.85 and 498,401.22 is: 686,662.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,096.46 : 887,390.85 = 498,401.22 : x
  2. Step 2: Convert to fraction form
    644,096.46/887,390.85 = 498,401.22/x
  3. Step 3: Cross multiply
    644,096.46x = 887,390.85 × 498,401.22
  4. Step 4: Simplify right side
    644,096.46x = 442,276,682,256.84
  5. Step 5: Solve for x
    x = 442,276,682,256.84/644,096.46
  6. Step 6: Final answer
    x = 686,662.18

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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.