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Finding the Fourth Proportional to 663,653.52, 915,919.62 and 377,216.67

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Solution

The fourth proportional to 663,653.52, 915,919.62 and 377,216.67 is: 520,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,653.52 : 915,919.62 = 377,216.67 : x
  2. Step 2: Convert to fraction form
    663,653.52/915,919.62 = 377,216.67/x
  3. Step 3: Cross multiply
    663,653.52x = 915,919.62 × 377,216.67
  4. Step 4: Simplify right side
    663,653.52x = 345,500,149,044.07
  5. Step 5: Solve for x
    x = 345,500,149,044.07/663,653.52
  6. Step 6: Final answer
    x = 520,603.20

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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.