Home / 641,811.48-885,699.83-355,350.02

Finding the Fourth Proportional to 641,811.48, 885,699.83 and 355,350.02

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Solution

The fourth proportional to 641,811.48, 885,699.83 and 355,350.02 is: 490,383.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,811.48 : 885,699.83 = 355,350.02 : x
  2. Step 2: Convert to fraction form
    641,811.48/885,699.83 = 355,350.02/x
  3. Step 3: Cross multiply
    641,811.48x = 885,699.83 × 355,350.02
  4. Step 4: Simplify right side
    641,811.48x = 314,733,446,099.25
  5. Step 5: Solve for x
    x = 314,733,446,099.25/641,811.48
  6. Step 6: Final answer
    x = 490,383.01

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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.