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Finding the Fourth Proportional to 688,601.80, 965,039 and 688,601.80

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Solution

The fourth proportional to 688,601.80, 965,039 and 688,601.80 is: 965,039

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,601.80 : 965,039 = 688,601.80 : x
  2. Step 2: Convert to fraction form
    688,601.80/965,039 = 688,601.80/x
  3. Step 3: Cross multiply
    688,601.80x = 965,039 × 688,601.80
  4. Step 4: Simplify right side
    688,601.80x = 664,527,592,470.20
  5. Step 5: Solve for x
    x = 664,527,592,470.20/688,601.80
  6. Step 6: Final answer
    x = 965,039

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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.