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Finding the Fourth Proportional to 663,299.10, 915,355.84 and 376,834.90

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Solution

The fourth proportional to 663,299.10, 915,355.84 and 376,834.90 is: 520,033.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,299.10 : 915,355.84 = 376,834.90 : x
  2. Step 2: Convert to fraction form
    663,299.10/915,355.84 = 376,834.90/x
  3. Step 3: Cross multiply
    663,299.10x = 915,355.84 × 376,834.90
  4. Step 4: Simplify right side
    663,299.10x = 344,938,026,430.82
  5. Step 5: Solve for x
    x = 344,938,026,430.82/663,299.10
  6. Step 6: Final answer
    x = 520,033.91

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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.