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Finding the Fourth Proportional to 647,505.11, 893,568.15 and 357,150.03

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Solution

The fourth proportional to 647,505.11, 893,568.15 and 357,150.03 is: 492,873.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,505.11 : 893,568.15 = 357,150.03 : x
  2. Step 2: Convert to fraction form
    647,505.11/893,568.15 = 357,150.03/x
  3. Step 3: Cross multiply
    647,505.11x = 893,568.15 × 357,150.03
  4. Step 4: Simplify right side
    647,505.11x = 319,137,891,579.55
  5. Step 5: Solve for x
    x = 319,137,891,579.55/647,505.11
  6. Step 6: Final answer
    x = 492,873.17

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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.