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Finding the Fourth Proportional to 612,005.33, 918,163.74 and 359,499.35

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Solution

The fourth proportional to 612,005.33, 918,163.74 and 359,499.35 is: 539,340.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,005.33 : 918,163.74 = 359,499.35 : x
  2. Step 2: Convert to fraction form
    612,005.33/918,163.74 = 359,499.35/x
  3. Step 3: Cross multiply
    612,005.33x = 918,163.74 × 359,499.35
  4. Step 4: Simplify right side
    612,005.33x = 330,079,267,723.57
  5. Step 5: Solve for x
    x = 330,079,267,723.57/612,005.33
  6. Step 6: Final answer
    x = 539,340.51

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1.5x scale

Why These Related Problems?

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