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Finding the Fourth Proportional to 647,795.33, 893,960.67 and 357,406.88

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Solution

The fourth proportional to 647,795.33, 893,960.67 and 357,406.88 is: 493,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,795.33 : 893,960.67 = 357,406.88 : x
  2. Step 2: Convert to fraction form
    647,795.33/893,960.67 = 357,406.88/x
  3. Step 3: Cross multiply
    647,795.33x = 893,960.67 × 357,406.88
  4. Step 4: Simplify right side
    647,795.33x = 319,507,697,148.35
  5. Step 5: Solve for x
    x = 319,507,697,148.35/647,795.33
  6. Step 6: Final answer
    x = 493,223.21

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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.