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Finding the Fourth Proportional to 809,345.60, 1,211,253.60 and 709,812.80

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Solution

The fourth proportional to 809,345.60, 1,211,253.60 and 709,812.80 is: 1,062,294.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,345.60 : 1,211,253.60 = 709,812.80 : x
  2. Step 2: Convert to fraction form
    809,345.60/1,211,253.60 = 709,812.80/x
  3. Step 3: Cross multiply
    809,345.60x = 1,211,253.60 × 709,812.80
  4. Step 4: Simplify right side
    809,345.60x = 859,763,309,326.08
  5. Step 5: Solve for x
    x = 859,763,309,326.08/809,345.60
  6. Step 6: Final answer
    x = 1,062,294.41

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1.5x scale

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.