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Finding the Fourth Proportional to 663,330.33, 915,420.33 and 376,898.94

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Solution

The fourth proportional to 663,330.33, 915,420.33 and 376,898.94 is: 520,134.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,330.33 : 915,420.33 = 376,898.94 : x
  2. Step 2: Convert to fraction form
    663,330.33/915,420.33 = 376,898.94/x
  3. Step 3: Cross multiply
    663,330.33x = 915,420.33 × 376,898.94
  4. Step 4: Simplify right side
    663,330.33x = 345,020,952,031.45
  5. Step 5: Solve for x
    x = 345,020,952,031.45/663,330.33
  6. Step 6: Final answer
    x = 520,134.44

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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.