Home / 641,949.47-885,879.44-355,463.40

Finding the Fourth Proportional to 641,949.47, 885,879.44 and 355,463.40

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Solution

The fourth proportional to 641,949.47, 885,879.44 and 355,463.40 is: 490,533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,949.47 : 885,879.44 = 355,463.40 : x
  2. Step 2: Convert to fraction form
    641,949.47/885,879.44 = 355,463.40/x
  3. Step 3: Cross multiply
    641,949.47x = 885,879.44 × 355,463.40
  4. Step 4: Simplify right side
    641,949.47x = 314,897,715,955.18
  5. Step 5: Solve for x
    x = 314,897,715,955.18/641,949.47
  6. Step 6: Final answer
    x = 490,533.50

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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.