Home / 680,928.30-1,021,392.45-415,207.80

Finding the Fourth Proportional to 680,928.30, 1,021,392.45 and 415,207.80

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Solution

The fourth proportional to 680,928.30, 1,021,392.45 and 415,207.80 is: 622,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,928.30 : 1,021,392.45 = 415,207.80 : x
  2. Step 2: Convert to fraction form
    680,928.30/1,021,392.45 = 415,207.80/x
  3. Step 3: Cross multiply
    680,928.30x = 1,021,392.45 × 415,207.80
  4. Step 4: Simplify right side
    680,928.30x = 424,090,112,101.11
  5. Step 5: Solve for x
    x = 424,090,112,101.11/680,928.30
  6. Step 6: Final answer
    x = 622,811.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.