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Finding the Fourth Proportional to 540,611.49, 810,129.90 and 259,800.69

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Solution

The fourth proportional to 540,611.49, 810,129.90 and 259,800.69 is: 389,322.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,611.49 : 810,129.90 = 259,800.69 : x
  2. Step 2: Convert to fraction form
    540,611.49/810,129.90 = 259,800.69/x
  3. Step 3: Cross multiply
    540,611.49x = 810,129.90 × 259,800.69
  4. Step 4: Simplify right side
    540,611.49x = 210,472,307,009.63
  5. Step 5: Solve for x
    x = 210,472,307,009.63/540,611.49
  6. Step 6: Final answer
    x = 389,322.67

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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.