Home / 786,539.80-1,179,809.70-313,564.60

Finding the Fourth Proportional to 786,539.80, 1,179,809.70 and 313,564.60

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Solution

The fourth proportional to 786,539.80, 1,179,809.70 and 313,564.60 is: 470,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,539.80 : 1,179,809.70 = 313,564.60 : x
  2. Step 2: Convert to fraction form
    786,539.80/1,179,809.70 = 313,564.60/x
  3. Step 3: Cross multiply
    786,539.80x = 1,179,809.70 × 313,564.60
  4. Step 4: Simplify right side
    786,539.80x = 369,946,556,656.62
  5. Step 5: Solve for x
    x = 369,946,556,656.62/786,539.80
  6. Step 6: Final answer
    x = 470,346.90

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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.