Home / 860,739.60-1,289,554.20-761,206.80

Finding the Fourth Proportional to 860,739.60, 1,289,554.20 and 761,206.80

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Solution

The fourth proportional to 860,739.60, 1,289,554.20 and 761,206.80 is: 1,140,434.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,739.60 : 1,289,554.20 = 761,206.80 : x
  2. Step 2: Convert to fraction form
    860,739.60/1,289,554.20 = 761,206.80/x
  3. Step 3: Cross multiply
    860,739.60x = 1,289,554.20 × 761,206.80
  4. Step 4: Simplify right side
    860,739.60x = 981,617,426,008.56
  5. Step 5: Solve for x
    x = 981,617,426,008.56/860,739.60
  6. Step 6: Final answer
    x = 1,140,434.84

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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.