Home / 1,380,909.03-2,071,314.56-421,325.88

Finding the Fourth Proportional to 1,380,909.03, 2,071,314.56 and 421,325.88

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Solution

The fourth proportional to 1,380,909.03, 2,071,314.56 and 421,325.88 is: 631,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,909.03 : 2,071,314.56 = 421,325.88 : x
  2. Step 2: Convert to fraction form
    1,380,909.03/2,071,314.56 = 421,325.88/x
  3. Step 3: Cross multiply
    1,380,909.03x = 2,071,314.56 × 421,325.88
  4. Step 4: Simplify right side
    1,380,909.03x = 872,698,430,802.13
  5. Step 5: Solve for x
    x = 872,698,430,802.13/1,380,909.03
  6. Step 6: Final answer
    x = 631,973.88

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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.