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Finding the Fourth Proportional to 290,470.60, 405,829.40 and 290,470.60

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Solution

The fourth proportional to 290,470.60, 405,829.40 and 290,470.60 is: 405,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,470.60 : 405,829.40 = 290,470.60 : x
  2. Step 2: Convert to fraction form
    290,470.60/405,829.40 = 290,470.60/x
  3. Step 3: Cross multiply
    290,470.60x = 405,829.40 × 290,470.60
  4. Step 4: Simplify right side
    290,470.60x = 117,881,509,315.64
  5. Step 5: Solve for x
    x = 117,881,509,315.64/290,470.60
  6. Step 6: Final answer
    x = 405,829.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.