Home / 643,810.20-966,152.70-359,500.20

Finding the Fourth Proportional to 643,810.20, 966,152.70 and 359,500.20

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Solution

The fourth proportional to 643,810.20, 966,152.70 and 359,500.20 is: 539,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,810.20 : 966,152.70 = 359,500.20 : x
  2. Step 2: Convert to fraction form
    643,810.20/966,152.70 = 359,500.20/x
  3. Step 3: Cross multiply
    643,810.20x = 966,152.70 × 359,500.20
  4. Step 4: Simplify right side
    643,810.20x = 347,332,088,880.54
  5. Step 5: Solve for x
    x = 347,332,088,880.54/643,810.20
  6. Step 6: Final answer
    x = 539,494.54

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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.