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Finding the Fourth Proportional to 484,610.69, 668,648.50 and 407,380.02

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Solution

The fourth proportional to 484,610.69, 668,648.50 and 407,380.02 is: 562,088.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,610.69 : 668,648.50 = 407,380.02 : x
  2. Step 2: Convert to fraction form
    484,610.69/668,648.50 = 407,380.02/x
  3. Step 3: Cross multiply
    484,610.69x = 668,648.50 × 407,380.02
  4. Step 4: Simplify right side
    484,610.69x = 272,394,038,284.52
  5. Step 5: Solve for x
    x = 272,394,038,284.52/484,610.69
  6. Step 6: Final answer
    x = 562,088.39

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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.