Home / 385,659.09-578,727.59-185,999.49

Finding the Fourth Proportional to 385,659.09, 578,727.59 and 185,999.49

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Solution

The fourth proportional to 385,659.09, 578,727.59 and 185,999.49 is: 279,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,659.09 : 578,727.59 = 185,999.49 : x
  2. Step 2: Convert to fraction form
    385,659.09/578,727.59 = 185,999.49/x
  3. Step 3: Cross multiply
    385,659.09x = 578,727.59 × 185,999.49
  4. Step 4: Simplify right side
    385,659.09x = 107,643,035,658.93
  5. Step 5: Solve for x
    x = 107,643,035,658.93/385,659.09
  6. Step 6: Final answer
    x = 279,114.48

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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.