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Finding the Fourth Proportional to 627,051.84, 865,337.76 and 340,574.88

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Solution

The fourth proportional to 627,051.84, 865,337.76 and 340,574.88 is: 469,996.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,051.84 : 865,337.76 = 340,574.88 : x
  2. Step 2: Convert to fraction form
    627,051.84/865,337.76 = 340,574.88/x
  3. Step 3: Cross multiply
    627,051.84x = 865,337.76 × 340,574.88
  4. Step 4: Simplify right side
    627,051.84x = 294,712,303,771.47
  5. Step 5: Solve for x
    x = 294,712,303,771.47/627,051.84
  6. Step 6: Final answer
    x = 469,996.71

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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.