Home / 685,783.20-1,028,674.80-286,291.20

Finding the Fourth Proportional to 685,783.20, 1,028,674.80 and 286,291.20

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Solution

The fourth proportional to 685,783.20, 1,028,674.80 and 286,291.20 is: 429,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,783.20 : 1,028,674.80 = 286,291.20 : x
  2. Step 2: Convert to fraction form
    685,783.20/1,028,674.80 = 286,291.20/x
  3. Step 3: Cross multiply
    685,783.20x = 1,028,674.80 × 286,291.20
  4. Step 4: Simplify right side
    685,783.20x = 294,500,542,901.76
  5. Step 5: Solve for x
    x = 294,500,542,901.76/685,783.20
  6. Step 6: Final answer
    x = 429,436.80

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Similar ratio
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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.