Home / 786,989.80-1,180,970.70-313,625.80

Finding the Fourth Proportional to 786,989.80, 1,180,970.70 and 313,625.80

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Solution

The fourth proportional to 786,989.80, 1,180,970.70 and 313,625.80 is: 470,632.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,989.80 : 1,180,970.70 = 313,625.80 : x
  2. Step 2: Convert to fraction form
    786,989.80/1,180,970.70 = 313,625.80/x
  3. Step 3: Cross multiply
    786,989.80x = 1,180,970.70 × 313,625.80
  4. Step 4: Simplify right side
    786,989.80x = 370,382,880,564.06
  5. Step 5: Solve for x
    x = 370,382,880,564.06/786,989.80
  6. Step 6: Final answer
    x = 470,632.38

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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.