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Finding the Fourth Proportional to 641,029.80, 884,628.90 and 354,542.52

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Solution

The fourth proportional to 641,029.80, 884,628.90 and 354,542.52 is: 489,272.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,029.80 : 884,628.90 = 354,542.52 : x
  2. Step 2: Convert to fraction form
    641,029.80/884,628.90 = 354,542.52/x
  3. Step 3: Cross multiply
    641,029.80x = 884,628.90 × 354,542.52
  4. Step 4: Simplify right side
    641,029.80x = 313,638,559,470.83
  5. Step 5: Solve for x
    x = 313,638,559,470.83/641,029.80
  6. Step 6: Final answer
    x = 489,272.98

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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.