Home / 621,152.20-931,814.70-266,163.40

Finding the Fourth Proportional to 621,152.20, 931,814.70 and 266,163.40

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Solution

The fourth proportional to 621,152.20, 931,814.70 and 266,163.40 is: 399,282.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,152.20 : 931,814.70 = 266,163.40 : x
  2. Step 2: Convert to fraction form
    621,152.20/931,814.70 = 266,163.40/x
  3. Step 3: Cross multiply
    621,152.20x = 931,814.70 × 266,163.40
  4. Step 4: Simplify right side
    621,152.20x = 248,014,968,721.98
  5. Step 5: Solve for x
    x = 248,014,968,721.98/621,152.20
  6. Step 6: Final answer
    x = 399,282.12

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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.