Home / 1,989,932.55-2,985,484.46-642,069.87

Finding the Fourth Proportional to 1,989,932.55, 2,985,484.46 and 642,069.87

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Solution

The fourth proportional to 1,989,932.55, 2,985,484.46 and 642,069.87 is: 963,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,932.55 : 2,985,484.46 = 642,069.87 : x
  2. Step 2: Convert to fraction form
    1,989,932.55/2,985,484.46 = 642,069.87/x
  3. Step 3: Cross multiply
    1,989,932.55x = 2,985,484.46 × 642,069.87
  4. Step 4: Simplify right side
    1,989,932.55x = 1,916,889,615,908.87
  5. Step 5: Solve for x
    x = 1,916,889,615,908.87/1,989,932.55
  6. Step 6: Final answer
    x = 963,293.76

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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.