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Finding the Fourth Proportional to 627,513.84, 866,002.32 and 355,634.64

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Solution

The fourth proportional to 627,513.84, 866,002.32 and 355,634.64 is: 490,794.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,513.84 : 866,002.32 = 355,634.64 : x
  2. Step 2: Convert to fraction form
    627,513.84/866,002.32 = 355,634.64/x
  3. Step 3: Cross multiply
    627,513.84x = 866,002.32 × 355,634.64
  4. Step 4: Simplify right side
    627,513.84x = 307,980,423,312.37
  5. Step 5: Solve for x
    x = 307,980,423,312.37/627,513.84
  6. Step 6: Final answer
    x = 490,794.63

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1.5x scale

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.