Home / 1,380,965.34-2,071,448.16-421,425.98

Finding the Fourth Proportional to 1,380,965.34, 2,071,448.16 and 421,425.98

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Solution

The fourth proportional to 1,380,965.34, 2,071,448.16 and 421,425.98 is: 632,139.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,965.34 : 2,071,448.16 = 421,425.98 : x
  2. Step 2: Convert to fraction form
    1,380,965.34/2,071,448.16 = 421,425.98/x
  3. Step 3: Cross multiply
    1,380,965.34x = 2,071,448.16 × 421,425.98
  4. Step 4: Simplify right side
    1,380,965.34x = 872,962,060,489.96
  5. Step 5: Solve for x
    x = 872,962,060,489.96/1,380,965.34
  6. Step 6: Final answer
    x = 632,139.01

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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.