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Finding the Fourth Proportional to 809,133.60, 1,210,935.60 and 709,600.80

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Solution

The fourth proportional to 809,133.60, 1,210,935.60 and 709,600.80 is: 1,061,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,133.60 : 1,210,935.60 = 709,600.80 : x
  2. Step 2: Convert to fraction form
    809,133.60/1,210,935.60 = 709,600.80/x
  3. Step 3: Cross multiply
    809,133.60x = 1,210,935.60 × 709,600.80
  4. Step 4: Simplify right side
    809,133.60x = 859,280,870,508.48
  5. Step 5: Solve for x
    x = 859,280,870,508.48/809,133.60
  6. Step 6: Final answer
    x = 1,061,976.50

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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.