Home / 626,947.98-865,198.52-355,008.71

Finding the Fourth Proportional to 626,947.98, 865,198.52 and 355,008.71

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Solution

The fourth proportional to 626,947.98, 865,198.52 and 355,008.71 is: 489,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,947.98 : 865,198.52 = 355,008.71 : x
  2. Step 2: Convert to fraction form
    626,947.98/865,198.52 = 355,008.71/x
  3. Step 3: Cross multiply
    626,947.98x = 865,198.52 × 355,008.71
  4. Step 4: Simplify right side
    626,947.98x = 307,153,004,378.07
  5. Step 5: Solve for x
    x = 307,153,004,378.07/626,947.98
  6. Step 6: Final answer
    x = 489,917.85

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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.