Home / 642,271.77-963,429.53-305,138.43

Finding the Fourth Proportional to 642,271.77, 963,429.53 and 305,138.43

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Solution

The fourth proportional to 642,271.77, 963,429.53 and 305,138.43 is: 457,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,271.77 : 963,429.53 = 305,138.43 : x
  2. Step 2: Convert to fraction form
    642,271.77/963,429.53 = 305,138.43/x
  3. Step 3: Cross multiply
    642,271.77x = 963,429.53 × 305,138.43
  4. Step 4: Simplify right side
    642,271.77x = 293,979,372,674.15
  5. Step 5: Solve for x
    x = 293,979,372,674.15/642,271.77
  6. Step 6: Final answer
    x = 457,718.04

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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.