Home / 641,963.25-885,898.38-355,477.18

Finding the Fourth Proportional to 641,963.25, 885,898.38 and 355,477.18

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Solution

The fourth proportional to 641,963.25, 885,898.38 and 355,477.18 is: 490,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,963.25 : 885,898.38 = 355,477.18 : x
  2. Step 2: Convert to fraction form
    641,963.25/885,898.38 = 355,477.18/x
  3. Step 3: Cross multiply
    641,963.25x = 885,898.38 × 355,477.18
  4. Step 4: Simplify right side
    641,963.25x = 314,916,657,888.97
  5. Step 5: Solve for x
    x = 314,916,657,888.97/641,963.25
  6. Step 6: Final answer
    x = 490,552.47

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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.