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Finding the Fourth Proportional to 692,178.40, 966,687.80 and 692,178.40

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Solution

The fourth proportional to 692,178.40, 966,687.80 and 692,178.40 is: 966,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,178.40 : 966,687.80 = 692,178.40 : x
  2. Step 2: Convert to fraction form
    692,178.40/966,687.80 = 692,178.40/x
  3. Step 3: Cross multiply
    692,178.40x = 966,687.80 × 692,178.40
  4. Step 4: Simplify right side
    692,178.40x = 669,120,414,703.52
  5. Step 5: Solve for x
    x = 669,120,414,703.52/692,178.40
  6. Step 6: Final answer
    x = 966,687.80

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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.