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Finding the Fourth Proportional to 626,210.48, 864,172.14 and 339,730.57

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Solution

The fourth proportional to 626,210.48, 864,172.14 and 339,730.57 is: 468,829.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,210.48 : 864,172.14 = 339,730.57 : x
  2. Step 2: Convert to fraction form
    626,210.48/864,172.14 = 339,730.57/x
  3. Step 3: Cross multiply
    626,210.48x = 864,172.14 × 339,730.57
  4. Step 4: Simplify right side
    626,210.48x = 293,585,691,539.89
  5. Step 5: Solve for x
    x = 293,585,691,539.89/626,210.48
  6. Step 6: Final answer
    x = 468,829.09

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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.