Home / 860,358.78-1,290,535.83-320,602.76

Finding the Fourth Proportional to 860,358.78, 1,290,535.83 and 320,602.76

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Solution

The fourth proportional to 860,358.78, 1,290,535.83 and 320,602.76 is: 480,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,358.78 : 1,290,535.83 = 320,602.76 : x
  2. Step 2: Convert to fraction form
    860,358.78/1,290,535.83 = 320,602.76/x
  3. Step 3: Cross multiply
    860,358.78x = 1,290,535.83 × 320,602.76
  4. Step 4: Simplify right side
    860,358.78x = 413,749,347,363.72
  5. Step 5: Solve for x
    x = 413,749,347,363.72/860,358.78
  6. Step 6: Final answer
    x = 480,903.27

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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.