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Finding the Fourth Proportional to 620,712.70, 930,982.65 and 200,031.10

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Solution

The fourth proportional to 620,712.70, 930,982.65 and 200,031.10 is: 300,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,712.70 : 930,982.65 = 200,031.10 : x
  2. Step 2: Convert to fraction form
    620,712.70/930,982.65 = 200,031.10/x
  3. Step 3: Cross multiply
    620,712.70x = 930,982.65 × 200,031.10
  4. Step 4: Simplify right side
    620,712.70x = 186,225,483,560.42
  5. Step 5: Solve for x
    x = 186,225,483,560.42/620,712.70
  6. Step 6: Final answer
    x = 300,018.81

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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.