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Finding the Fourth Proportional to 979,623.40, 1,368,673.40 and 979,623.40

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Solution

The fourth proportional to 979,623.40, 1,368,673.40 and 979,623.40 is: 1,368,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,623.40 : 1,368,673.40 = 979,623.40 : x
  2. Step 2: Convert to fraction form
    979,623.40/1,368,673.40 = 979,623.40/x
  3. Step 3: Cross multiply
    979,623.40x = 1,368,673.40 × 979,623.40
  4. Step 4: Simplify right side
    979,623.40x = 1,340,784,489,597.56
  5. Step 5: Solve for x
    x = 1,340,784,489,597.56/979,623.40
  6. Step 6: Final answer
    x = 1,368,673.40

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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.