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Finding the Fourth Proportional to 627,122.60, 865,433.62 and 340,642.62

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Solution

The fourth proportional to 627,122.60, 865,433.62 and 340,642.62 is: 470,089.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,122.60 : 865,433.62 = 340,642.62 : x
  2. Step 2: Convert to fraction form
    627,122.60/865,433.62 = 340,642.62/x
  3. Step 3: Cross multiply
    627,122.60x = 865,433.62 × 340,642.62
  4. Step 4: Simplify right side
    627,122.60x = 294,803,575,752.88
  5. Step 5: Solve for x
    x = 294,803,575,752.88/627,122.60
  6. Step 6: Final answer
    x = 470,089.22

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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.