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Finding the Fourth Proportional to 688,632.70, 964,873.10 and 688,632.70

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Solution

The fourth proportional to 688,632.70, 964,873.10 and 688,632.70 is: 964,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,632.70 : 964,873.10 = 688,632.70 : x
  2. Step 2: Convert to fraction form
    688,632.70/964,873.10 = 688,632.70/x
  3. Step 3: Cross multiply
    688,632.70x = 964,873.10 × 688,632.70
  4. Step 4: Simplify right side
    688,632.70x = 664,443,168,010.37
  5. Step 5: Solve for x
    x = 664,443,168,010.37/688,632.70
  6. Step 6: Final answer
    x = 964,873.10

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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.