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Finding the Fourth Proportional to 663,645.02, 915,907.88 and 377,208.16

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Solution

The fourth proportional to 663,645.02, 915,907.88 and 377,208.16 is: 520,591.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,645.02 : 915,907.88 = 377,208.16 : x
  2. Step 2: Convert to fraction form
    663,645.02/915,907.88 = 377,208.16/x
  3. Step 3: Cross multiply
    663,645.02x = 915,907.88 × 377,208.16
  4. Step 4: Simplify right side
    663,645.02x = 345,487,926,144.30
  5. Step 5: Solve for x
    x = 345,487,926,144.30/663,645.02
  6. Step 6: Final answer
    x = 520,591.45

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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.