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Finding the Fourth Proportional to 656,489.45, 983,905.83 and 352,128.77

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Solution

The fourth proportional to 656,489.45, 983,905.83 and 352,128.77 is: 527,748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,489.45 : 983,905.83 = 352,128.77 : x
  2. Step 2: Convert to fraction form
    656,489.45/983,905.83 = 352,128.77/x
  3. Step 3: Cross multiply
    656,489.45x = 983,905.83 × 352,128.77
  4. Step 4: Simplify right side
    656,489.45x = 346,461,549,713.73
  5. Step 5: Solve for x
    x = 346,461,549,713.73/656,489.45
  6. Step 6: Final answer
    x = 527,748.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.