Home / 763,765.20-1,145,647.80-202,856.40

Finding the Fourth Proportional to 763,765.20, 1,145,647.80 and 202,856.40

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Solution

The fourth proportional to 763,765.20, 1,145,647.80 and 202,856.40 is: 304,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,765.20 : 1,145,647.80 = 202,856.40 : x
  2. Step 2: Convert to fraction form
    763,765.20/1,145,647.80 = 202,856.40/x
  3. Step 3: Cross multiply
    763,765.20x = 1,145,647.80 × 202,856.40
  4. Step 4: Simplify right side
    763,765.20x = 232,401,988,375.92
  5. Step 5: Solve for x
    x = 232,401,988,375.92/763,765.20
  6. Step 6: Final answer
    x = 304,284.60

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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.