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Finding the Fourth Proportional to 656,128.80, 982,810.80 and 545,536.80

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Solution

The fourth proportional to 656,128.80, 982,810.80 and 545,536.80 is: 817,155.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,128.80 : 982,810.80 = 545,536.80 : x
  2. Step 2: Convert to fraction form
    656,128.80/982,810.80 = 545,536.80/x
  3. Step 3: Cross multiply
    656,128.80x = 982,810.80 × 545,536.80
  4. Step 4: Simplify right side
    656,128.80x = 536,159,458,837.44
  5. Step 5: Solve for x
    x = 536,159,458,837.44/656,128.80
  6. Step 6: Final answer
    x = 817,155.81

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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.