Home / 1,384,074.30-1,910,019.89-772,190.66

Finding the Fourth Proportional to 1,384,074.30, 1,910,019.89 and 772,190.66

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Solution

The fourth proportional to 1,384,074.30, 1,910,019.89 and 772,190.66 is: 1,065,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,074.30 : 1,910,019.89 = 772,190.66 : x
  2. Step 2: Convert to fraction form
    1,384,074.30/1,910,019.89 = 772,190.66/x
  3. Step 3: Cross multiply
    1,384,074.30x = 1,910,019.89 × 772,190.66
  4. Step 4: Simplify right side
    1,384,074.30x = 1,474,899,506,061.17
  5. Step 5: Solve for x
    x = 1,474,899,506,061.17/1,384,074.30
  6. Step 6: Final answer
    x = 1,065,621.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.