Home / 1,427,728.35-1,970,365.34-815,971.60

Finding the Fourth Proportional to 1,427,728.35, 1,970,365.34 and 815,971.60

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Solution

The fourth proportional to 1,427,728.35, 1,970,365.34 and 815,971.60 is: 1,126,098.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,728.35 : 1,970,365.34 = 815,971.60 : x
  2. Step 2: Convert to fraction form
    1,427,728.35/1,970,365.34 = 815,971.60/x
  3. Step 3: Cross multiply
    1,427,728.35x = 1,970,365.34 × 815,971.60
  4. Step 4: Simplify right side
    1,427,728.35x = 1,607,762,145,132.66
  5. Step 5: Solve for x
    x = 1,607,762,145,132.66/1,427,728.35
  6. Step 6: Final answer
    x = 1,126,098.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.