Home / 1,380,674.84-2,071,131.95-421,346.43

Finding the Fourth Proportional to 1,380,674.84, 2,071,131.95 and 421,346.43

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Solution

The fourth proportional to 1,380,674.84, 2,071,131.95 and 421,346.43 is: 632,056.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,674.84 : 2,071,131.95 = 421,346.43 : x
  2. Step 2: Convert to fraction form
    1,380,674.84/2,071,131.95 = 421,346.43/x
  3. Step 3: Cross multiply
    1,380,674.84x = 2,071,131.95 × 421,346.43
  4. Step 4: Simplify right side
    1,380,674.84x = 872,664,060,019.82
  5. Step 5: Solve for x
    x = 872,664,060,019.82/1,380,674.84
  6. Step 6: Final answer
    x = 632,056.18

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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.