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Finding the Fourth Proportional to 678,774.24, 936,710.64 and 376,968.24

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Solution

The fourth proportional to 678,774.24, 936,710.64 and 376,968.24 is: 520,217.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,774.24 : 936,710.64 = 376,968.24 : x
  2. Step 2: Convert to fraction form
    678,774.24/936,710.64 = 376,968.24/x
  3. Step 3: Cross multiply
    678,774.24x = 936,710.64 × 376,968.24
  4. Step 4: Simplify right side
    678,774.24x = 353,110,161,350.07
  5. Step 5: Solve for x
    x = 353,110,161,350.07/678,774.24
  6. Step 6: Final answer
    x = 520,217.39

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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.