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Finding the Fourth Proportional to 647,597.88, 893,690.88 and 357,220.56

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Solution

The fourth proportional to 647,597.88, 893,690.88 and 357,220.56 is: 492,967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,597.88 : 893,690.88 = 357,220.56 : x
  2. Step 2: Convert to fraction form
    647,597.88/893,690.88 = 357,220.56/x
  3. Step 3: Cross multiply
    647,597.88x = 893,690.88 × 357,220.56
  4. Step 4: Simplify right side
    647,597.88x = 319,244,756,620.49
  5. Step 5: Solve for x
    x = 319,244,756,620.49/647,597.88
  6. Step 6: Final answer
    x = 492,967.58

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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.