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Finding the Fourth Proportional to 484,620.81, 668,662.47 and 407,390.19

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Solution

The fourth proportional to 484,620.81, 668,662.47 and 407,390.19 is: 562,102.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,620.81 : 668,662.47 = 407,390.19 : x
  2. Step 2: Convert to fraction form
    484,620.81/668,662.47 = 407,390.19/x
  3. Step 3: Cross multiply
    484,620.81x = 668,662.47 × 407,390.19
  4. Step 4: Simplify right side
    484,620.81x = 272,406,530,699.17
  5. Step 5: Solve for x
    x = 272,406,530,699.17/484,620.81
  6. Step 6: Final answer
    x = 562,102.42

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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.