Home / 1,274,868.02-1,912,442.13-421,628.87

Finding the Fourth Proportional to 1,274,868.02, 1,912,442.13 and 421,628.87

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Solution

The fourth proportional to 1,274,868.02, 1,912,442.13 and 421,628.87 is: 632,489.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,868.02 : 1,912,442.13 = 421,628.87 : x
  2. Step 2: Convert to fraction form
    1,274,868.02/1,912,442.13 = 421,628.87/x
  3. Step 3: Cross multiply
    1,274,868.02x = 1,912,442.13 × 421,628.87
  4. Step 4: Simplify right side
    1,274,868.02x = 806,340,818,993.40
  5. Step 5: Solve for x
    x = 806,340,818,993.40/1,274,868.02
  6. Step 6: Final answer
    x = 632,489.64

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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.