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Finding the Fourth Proportional to 575,368.05, 793,991.39 and 320,713.77

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Solution

The fourth proportional to 575,368.05, 793,991.39 and 320,713.77 is: 442,575.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,368.05 : 793,991.39 = 320,713.77 : x
  2. Step 2: Convert to fraction form
    575,368.05/793,991.39 = 320,713.77/x
  3. Step 3: Cross multiply
    575,368.05x = 793,991.39 × 320,713.77
  4. Step 4: Simplify right side
    575,368.05x = 254,643,970,430.87
  5. Step 5: Solve for x
    x = 254,643,970,430.87/575,368.05
  6. Step 6: Final answer
    x = 442,575.79

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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.