Home / 1,403,999.80-2,105,999.70-869,788.60

Finding the Fourth Proportional to 1,403,999.80, 2,105,999.70 and 869,788.60

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Solution

The fourth proportional to 1,403,999.80, 2,105,999.70 and 869,788.60 is: 1,304,682.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403,999.80 : 2,105,999.70 = 869,788.60 : x
  2. Step 2: Convert to fraction form
    1,403,999.80/2,105,999.70 = 869,788.60/x
  3. Step 3: Cross multiply
    1,403,999.80x = 2,105,999.70 × 869,788.60
  4. Step 4: Simplify right side
    1,403,999.80x = 1,831,774,530,663.42
  5. Step 5: Solve for x
    x = 1,831,774,530,663.42/1,403,999.80
  6. Step 6: Final answer
    x = 1,304,682.90

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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.