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Finding the Fourth Proportional to 1,382,980, 2,074,820.08 and 385,708

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Solution

The fourth proportional to 1,382,980, 2,074,820.08 and 385,708 is: 578,659.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,980 : 2,074,820.08 = 385,708 : x
  2. Step 2: Convert to fraction form
    1,382,980/2,074,820.08 = 385,708/x
  3. Step 3: Cross multiply
    1,382,980x = 2,074,820.08 × 385,708
  4. Step 4: Simplify right side
    1,382,980x = 800,274,703,416.64
  5. Step 5: Solve for x
    x = 800,274,703,416.64/1,382,980
  6. Step 6: Final answer
    x = 578,659.64

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.