Home / 1,380,657.48-2,070,072.54-661,105.32

Finding the Fourth Proportional to 1,380,657.48, 2,070,072.54 and 661,105.32

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Solution

The fourth proportional to 1,380,657.48, 2,070,072.54 and 661,105.32 is: 991,220.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,657.48 : 2,070,072.54 = 661,105.32 : x
  2. Step 2: Convert to fraction form
    1,380,657.48/2,070,072.54 = 661,105.32/x
  3. Step 3: Cross multiply
    1,380,657.48x = 2,070,072.54 × 661,105.32
  4. Step 4: Simplify right side
    1,380,657.48x = 1,368,535,968,979.91
  5. Step 5: Solve for x
    x = 1,368,535,968,979.91/1,380,657.48
  6. Step 6: Final answer
    x = 991,220.48

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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.