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Finding the Fourth Proportional to 627,384.79, 865,796.30 and 340,904.91

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Solution

The fourth proportional to 627,384.79, 865,796.30 and 340,904.91 is: 470,451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,384.79 : 865,796.30 = 340,904.91 : x
  2. Step 2: Convert to fraction form
    627,384.79/865,796.30 = 340,904.91/x
  3. Step 3: Cross multiply
    627,384.79x = 865,796.30 × 340,904.91
  4. Step 4: Simplify right side
    627,384.79x = 295,154,209,729.83
  5. Step 5: Solve for x
    x = 295,154,209,729.83/627,384.79
  6. Step 6: Final answer
    x = 470,451.65

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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.