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Finding the Fourth Proportional to 980,168.40, 1,369,436.40 and 980,168.40

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Solution

The fourth proportional to 980,168.40, 1,369,436.40 and 980,168.40 is: 1,369,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,168.40 : 1,369,436.40 = 980,168.40 : x
  2. Step 2: Convert to fraction form
    980,168.40/1,369,436.40 = 980,168.40/x
  3. Step 3: Cross multiply
    980,168.40x = 1,369,436.40 × 980,168.40
  4. Step 4: Simplify right side
    980,168.40x = 1,342,278,285,089.76
  5. Step 5: Solve for x
    x = 1,342,278,285,089.76/980,168.40
  6. Step 6: Final answer
    x = 1,369,436.40

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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.