Home / 809,816.45-1,117,546.70-470,306.57

Finding the Fourth Proportional to 809,816.45, 1,117,546.70 and 470,306.57

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Solution

The fourth proportional to 809,816.45, 1,117,546.70 and 470,306.57 is: 649,023.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816.45 : 1,117,546.70 = 470,306.57 : x
  2. Step 2: Convert to fraction form
    809,816.45/1,117,546.70 = 470,306.57/x
  3. Step 3: Cross multiply
    809,816.45x = 1,117,546.70 × 470,306.57
  4. Step 4: Simplify right side
    809,816.45x = 525,589,547,352.55
  5. Step 5: Solve for x
    x = 525,589,547,352.55/809,816.45
  6. Step 6: Final answer
    x = 649,023.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.