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Finding the Fourth Proportional to 580,076.99, 800,514.90 and 321,970.67

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Solution

The fourth proportional to 580,076.99, 800,514.90 and 321,970.67 is: 444,324.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,076.99 : 800,514.90 = 321,970.67 : x
  2. Step 2: Convert to fraction form
    580,076.99/800,514.90 = 321,970.67/x
  3. Step 3: Cross multiply
    580,076.99x = 800,514.90 × 321,970.67
  4. Step 4: Simplify right side
    580,076.99x = 257,742,319,948.79
  5. Step 5: Solve for x
    x = 257,742,319,948.79/580,076.99
  6. Step 6: Final answer
    x = 444,324.33

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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.