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Finding the Fourth Proportional to 626,551.68, 864,639.14 and 340,071.78

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Solution

The fourth proportional to 626,551.68, 864,639.14 and 340,071.78 is: 469,297.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,551.68 : 864,639.14 = 340,071.78 : x
  2. Step 2: Convert to fraction form
    626,551.68/864,639.14 = 340,071.78/x
  3. Step 3: Cross multiply
    626,551.68x = 864,639.14 × 340,071.78
  4. Step 4: Simplify right side
    626,551.68x = 294,039,371,397.47
  5. Step 5: Solve for x
    x = 294,039,371,397.47/626,551.68
  6. Step 6: Final answer
    x = 469,297.87

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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.