Home / 478,999.13-661,034.08-275,091.45

Finding the Fourth Proportional to 478,999.13, 661,034.08 and 275,091.45

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Solution

The fourth proportional to 478,999.13, 661,034.08 and 275,091.45 is: 379,634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,999.13 : 661,034.08 = 275,091.45 : x
  2. Step 2: Convert to fraction form
    478,999.13/661,034.08 = 275,091.45/x
  3. Step 3: Cross multiply
    478,999.13x = 661,034.08 × 275,091.45
  4. Step 4: Simplify right side
    478,999.13x = 181,844,824,918.96
  5. Step 5: Solve for x
    x = 181,844,824,918.96/478,999.13
  6. Step 6: Final answer
    x = 379,634.98

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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.