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Finding the Fourth Proportional to 548,661.65, 757,039.63 and 376,516.81

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Solution

The fourth proportional to 548,661.65, 757,039.63 and 376,516.81 is: 519,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,661.65 : 757,039.63 = 376,516.81 : x
  2. Step 2: Convert to fraction form
    548,661.65/757,039.63 = 376,516.81/x
  3. Step 3: Cross multiply
    548,661.65x = 757,039.63 × 376,516.81
  4. Step 4: Simplify right side
    548,661.65x = 285,038,143,697.29
  5. Step 5: Solve for x
    x = 285,038,143,697.29/548,661.65
  6. Step 6: Final answer
    x = 519,515.34

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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.