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Finding the Fourth Proportional to 612,277.38, 845,079.89 and 340,440.57

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Solution

The fourth proportional to 612,277.38, 845,079.89 and 340,440.57 is: 469,884.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,277.38 : 845,079.89 = 340,440.57 : x
  2. Step 2: Convert to fraction form
    612,277.38/845,079.89 = 340,440.57/x
  3. Step 3: Cross multiply
    612,277.38x = 845,079.89 × 340,440.57
  4. Step 4: Simplify right side
    612,277.38x = 287,699,477,744.93
  5. Step 5: Solve for x
    x = 287,699,477,744.93/612,277.38
  6. Step 6: Final answer
    x = 469,884.22

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1.5x scale

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.