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Finding the Fourth Proportional to 663,333.34, 915,424.48 and 376,901.94

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Solution

The fourth proportional to 663,333.34, 915,424.48 and 376,901.94 is: 520,138.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,333.34 : 915,424.48 = 376,901.94 : x
  2. Step 2: Convert to fraction form
    663,333.34/915,424.48 = 376,901.94/x
  3. Step 3: Cross multiply
    663,333.34x = 915,424.48 × 376,901.94
  4. Step 4: Simplify right side
    663,333.34x = 345,025,262,435.49
  5. Step 5: Solve for x
    x = 345,025,262,435.49/663,333.34
  6. Step 6: Final answer
    x = 520,138.58

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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.