Home / 478,629.20-660,506.76-263,769.20

Finding the Fourth Proportional to 478,629.20, 660,506.76 and 263,769.20

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Solution

The fourth proportional to 478,629.20, 660,506.76 and 263,769.20 is: 364,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,629.20 : 660,506.76 = 263,769.20 : x
  2. Step 2: Convert to fraction form
    478,629.20/660,506.76 = 263,769.20/x
  3. Step 3: Cross multiply
    478,629.20x = 660,506.76 × 263,769.20
  4. Step 4: Simplify right side
    478,629.20x = 174,221,339,679.79
  5. Step 5: Solve for x
    x = 174,221,339,679.79/478,629.20
  6. Step 6: Final answer
    x = 364,000.65

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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.