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Finding the Fourth Proportional to 684,901.70, 960,961.90 and 684,901.70

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Solution

The fourth proportional to 684,901.70, 960,961.90 and 684,901.70 is: 960,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,901.70 : 960,961.90 = 684,901.70 : x
  2. Step 2: Convert to fraction form
    684,901.70/960,961.90 = 684,901.70/x
  3. Step 3: Cross multiply
    684,901.70x = 960,961.90 × 684,901.70
  4. Step 4: Simplify right side
    684,901.70x = 658,164,438,945.23
  5. Step 5: Solve for x
    x = 658,164,438,945.23/684,901.70
  6. Step 6: Final answer
    x = 960,961.90

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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.