Home / 809,815.50-1,117,545.48-470,305.62

Finding the Fourth Proportional to 809,815.50, 1,117,545.48 and 470,305.62

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Solution

The fourth proportional to 809,815.50, 1,117,545.48 and 470,305.62 is: 649,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,815.50 : 1,117,545.48 = 470,305.62 : x
  2. Step 2: Convert to fraction form
    809,815.50/1,117,545.48 = 470,305.62/x
  3. Step 3: Cross multiply
    809,815.50x = 1,117,545.48 × 470,305.62
  4. Step 4: Simplify right side
    809,815.50x = 525,587,919,849.60
  5. Step 5: Solve for x
    x = 525,587,919,849.60/809,815.50
  6. Step 6: Final answer
    x = 649,021.81

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1.5x scale

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.