Home / 860,151.40-1,289,789.70-505,274.20

Finding the Fourth Proportional to 860,151.40, 1,289,789.70 and 505,274.20

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Solution

The fourth proportional to 860,151.40, 1,289,789.70 and 505,274.20 is: 757,654.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,151.40 : 1,289,789.70 = 505,274.20 : x
  2. Step 2: Convert to fraction form
    860,151.40/1,289,789.70 = 505,274.20/x
  3. Step 3: Cross multiply
    860,151.40x = 1,289,789.70 × 505,274.20
  4. Step 4: Simplify right side
    860,151.40x = 651,697,458,835.74
  5. Step 5: Solve for x
    x = 651,697,458,835.74/860,151.40
  6. Step 6: Final answer
    x = 757,654.36

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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.