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Finding the Fourth Proportional to 979,430.40, 1,469,145.60 and 979,430.40

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Solution

The fourth proportional to 979,430.40, 1,469,145.60 and 979,430.40 is: 1,469,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,430.40 : 1,469,145.60 = 979,430.40 : x
  2. Step 2: Convert to fraction form
    979,430.40/1,469,145.60 = 979,430.40/x
  3. Step 3: Cross multiply
    979,430.40x = 1,469,145.60 × 979,430.40
  4. Step 4: Simplify right side
    979,430.40x = 1,438,925,862,666.24
  5. Step 5: Solve for x
    x = 1,438,925,862,666.24/979,430.40
  6. Step 6: Final answer
    x = 1,469,145.60

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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.