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Finding the Fourth Proportional to 626,698.98, 864,009.42 and 498,066.96

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Solution

The fourth proportional to 626,698.98, 864,009.42 and 498,066.96 is: 686,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,698.98 : 864,009.42 = 498,066.96 : x
  2. Step 2: Convert to fraction form
    626,698.98/864,009.42 = 498,066.96/x
  3. Step 3: Cross multiply
    626,698.98x = 864,009.42 × 498,066.96
  4. Step 4: Simplify right side
    626,698.98x = 430,334,545,230.76
  5. Step 5: Solve for x
    x = 430,334,545,230.76/626,698.98
  6. Step 6: Final answer
    x = 686,668.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.