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Finding the Fourth Proportional to 641,762.48, 885,604.32 and 355,265.48

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Solution

The fourth proportional to 641,762.48, 885,604.32 and 355,265.48 is: 490,250.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,762.48 : 885,604.32 = 355,265.48 : x
  2. Step 2: Convert to fraction form
    641,762.48/885,604.32 = 355,265.48/x
  3. Step 3: Cross multiply
    641,762.48x = 885,604.32 × 355,265.48
  4. Step 4: Simplify right side
    641,762.48x = 314,624,643,834.87
  5. Step 5: Solve for x
    x = 314,624,643,834.87/641,762.48
  6. Step 6: Final answer
    x = 490,250.92

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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.