Home / 1,989,840.20-2,985,926.70-727,795.40

Finding the Fourth Proportional to 1,989,840.20, 2,985,926.70 and 727,795.40

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Solution

The fourth proportional to 1,989,840.20, 2,985,926.70 and 727,795.40 is: 1,092,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,840.20 : 2,985,926.70 = 727,795.40 : x
  2. Step 2: Convert to fraction form
    1,989,840.20/2,985,926.70 = 727,795.40/x
  3. Step 3: Cross multiply
    1,989,840.20x = 2,985,926.70 × 727,795.40
  4. Step 4: Simplify right side
    1,989,840.20x = 2,173,143,716,997.18
  5. Step 5: Solve for x
    x = 2,173,143,716,997.18/1,989,840.20
  6. Step 6: Final answer
    x = 1,092,119.72

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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.