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Finding the Fourth Proportional to 809,123.80, 1,130,673.80 and 809,123.80

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Solution

The fourth proportional to 809,123.80, 1,130,673.80 and 809,123.80 is: 1,130,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,123.80 : 1,130,673.80 = 809,123.80 : x
  2. Step 2: Convert to fraction form
    809,123.80/1,130,673.80 = 809,123.80/x
  3. Step 3: Cross multiply
    809,123.80x = 1,130,673.80 × 809,123.80
  4. Step 4: Simplify right side
    809,123.80x = 914,855,081,616.44
  5. Step 5: Solve for x
    x = 914,855,081,616.44/809,123.80
  6. Step 6: Final answer
    x = 1,130,673.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.