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Finding the Fourth Proportional to 626,564.84, 864,636.30 and 340,078.84

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Solution

The fourth proportional to 626,564.84, 864,636.30 and 340,078.84 is: 469,296.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,564.84 : 864,636.30 = 340,078.84 : x
  2. Step 2: Convert to fraction form
    626,564.84/864,636.30 = 340,078.84/x
  3. Step 3: Cross multiply
    626,564.84x = 864,636.30 × 340,078.84
  4. Step 4: Simplify right side
    626,564.84x = 294,044,509,925.89
  5. Step 5: Solve for x
    x = 294,044,509,925.89/626,564.84
  6. Step 6: Final answer
    x = 469,296.22

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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.