Home / 1,274,764.16-1,912,146.40-421,606.80

Finding the Fourth Proportional to 1,274,764.16, 1,912,146.40 and 421,606.80

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Solution

The fourth proportional to 1,274,764.16, 1,912,146.40 and 421,606.80 is: 632,410.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,764.16 : 1,912,146.40 = 421,606.80 : x
  2. Step 2: Convert to fraction form
    1,274,764.16/1,912,146.40 = 421,606.80/x
  3. Step 3: Cross multiply
    1,274,764.16x = 1,912,146.40 × 421,606.80
  4. Step 4: Simplify right side
    1,274,764.16x = 806,173,924,835.52
  5. Step 5: Solve for x
    x = 806,173,924,835.52/1,274,764.16
  6. Step 6: Final answer
    x = 632,410.25

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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.