Home / 805,345.07-1,111,383.79-442,771.45

Finding the Fourth Proportional to 805,345.07, 1,111,383.79 and 442,771.45

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Solution

The fourth proportional to 805,345.07, 1,111,383.79 and 442,771.45 is: 611,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,345.07 : 1,111,383.79 = 442,771.45 : x
  2. Step 2: Convert to fraction form
    805,345.07/1,111,383.79 = 442,771.45/x
  3. Step 3: Cross multiply
    805,345.07x = 1,111,383.79 × 442,771.45
  4. Step 4: Simplify right side
    805,345.07x = 492,089,008,319.41
  5. Step 5: Solve for x
    x = 492,089,008,319.41/805,345.07
  6. Step 6: Final answer
    x = 611,028.77

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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.