Home / 641,939.18-885,876.01-355,459.25

Finding the Fourth Proportional to 641,939.18, 885,876.01 and 355,459.25

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Solution

The fourth proportional to 641,939.18, 885,876.01 and 355,459.25 is: 490,533.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,939.18 : 885,876.01 = 355,459.25 : x
  2. Step 2: Convert to fraction form
    641,939.18/885,876.01 = 355,459.25/x
  3. Step 3: Cross multiply
    641,939.18x = 885,876.01 × 355,459.25
  4. Step 4: Simplify right side
    641,939.18x = 314,892,823,433.63
  5. Step 5: Solve for x
    x = 314,892,823,433.63/641,939.18
  6. Step 6: Final answer
    x = 490,533.74

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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.