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Finding the Fourth Proportional to 591,830.88, 817,090.92 and 385,297.08

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Solution

The fourth proportional to 591,830.88, 817,090.92 and 385,297.08 is: 531,947.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,830.88 : 817,090.92 = 385,297.08 : x
  2. Step 2: Convert to fraction form
    591,830.88/817,090.92 = 385,297.08/x
  3. Step 3: Cross multiply
    591,830.88x = 817,090.92 × 385,297.08
  4. Step 4: Simplify right side
    591,830.88x = 314,822,745,570.51
  5. Step 5: Solve for x
    x = 314,822,745,570.51/591,830.88
  6. Step 6: Final answer
    x = 531,947.14

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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.