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Finding the Fourth Proportional to 663,558.67, 915,710.43 and 361,752.67

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Solution

The fourth proportional to 663,558.67, 915,710.43 and 361,752.67 is: 499,218.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,558.67 : 915,710.43 = 361,752.67 : x
  2. Step 2: Convert to fraction form
    663,558.67/915,710.43 = 361,752.67/x
  3. Step 3: Cross multiply
    663,558.67x = 915,710.43 × 361,752.67
  4. Step 4: Simplify right side
    663,558.67x = 331,260,692,999.35
  5. Step 5: Solve for x
    x = 331,260,692,999.35/663,558.67
  6. Step 6: Final answer
    x = 499,218.39

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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.