Home / 641,544.20-885,303.76-355,037.48

Finding the Fourth Proportional to 641,544.20, 885,303.76 and 355,037.48

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Solution

The fourth proportional to 641,544.20, 885,303.76 and 355,037.48 is: 489,936.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,544.20 : 885,303.76 = 355,037.48 : x
  2. Step 2: Convert to fraction form
    641,544.20/885,303.76 = 355,037.48/x
  3. Step 3: Cross multiply
    641,544.20x = 885,303.76 × 355,037.48
  4. Step 4: Simplify right side
    641,544.20x = 314,316,015,984.93
  5. Step 5: Solve for x
    x = 314,316,015,984.93/641,544.20
  6. Step 6: Final answer
    x = 489,936.65

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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.