Home / 860,135.61-1,289,481.71-380,285.94

Finding the Fourth Proportional to 860,135.61, 1,289,481.71 and 380,285.94

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Solution

The fourth proportional to 860,135.61, 1,289,481.71 and 380,285.94 is: 570,109.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,135.61 : 1,289,481.71 = 380,285.94 : x
  2. Step 2: Convert to fraction form
    860,135.61/1,289,481.71 = 380,285.94/x
  3. Step 3: Cross multiply
    860,135.61x = 1,289,481.71 × 380,285.94
  4. Step 4: Simplify right side
    860,135.61x = 490,371,762,298.73
  5. Step 5: Solve for x
    x = 490,371,762,298.73/860,135.61
  6. Step 6: Final answer
    x = 570,109.83

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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.