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Finding the Fourth Proportional to 571,184.55, 855,414.91 and 330,790.54

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Solution

The fourth proportional to 571,184.55, 855,414.91 and 330,790.54 is: 495,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,184.55 : 855,414.91 = 330,790.54 : x
  2. Step 2: Convert to fraction form
    571,184.55/855,414.91 = 330,790.54/x
  3. Step 3: Cross multiply
    571,184.55x = 855,414.91 × 330,790.54
  4. Step 4: Simplify right side
    571,184.55x = 282,963,155,130.08
  5. Step 5: Solve for x
    x = 282,963,155,130.08/571,184.55
  6. Step 6: Final answer
    x = 495,397.07

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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.