Home / 642,621.40-963,932.10-493,322.20

Finding the Fourth Proportional to 642,621.40, 963,932.10 and 493,322.20

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Solution

The fourth proportional to 642,621.40, 963,932.10 and 493,322.20 is: 739,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,621.40 : 963,932.10 = 493,322.20 : x
  2. Step 2: Convert to fraction form
    642,621.40/963,932.10 = 493,322.20/x
  3. Step 3: Cross multiply
    642,621.40x = 963,932.10 × 493,322.20
  4. Step 4: Simplify right side
    642,621.40x = 475,529,104,222.62
  5. Step 5: Solve for x
    x = 475,529,104,222.62/642,621.40
  6. Step 6: Final answer
    x = 739,983.30

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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.