Home / 641,941.82-885,868.86-355,455.74

Finding the Fourth Proportional to 641,941.82, 885,868.86 and 355,455.74

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Solution

The fourth proportional to 641,941.82, 885,868.86 and 355,455.74 is: 490,522.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,941.82 : 885,868.86 = 355,455.74 : x
  2. Step 2: Convert to fraction form
    641,941.82/885,868.86 = 355,455.74/x
  3. Step 3: Cross multiply
    641,941.82x = 885,868.86 × 355,455.74
  4. Step 4: Simplify right side
    641,941.82x = 314,887,171,174.26
  5. Step 5: Solve for x
    x = 314,887,171,174.26/641,941.82
  6. Step 6: Final answer
    x = 490,522.91

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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.