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Finding the Fourth Proportional to 663,356.92, 915,457.26 and 376,925.56

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Solution

The fourth proportional to 663,356.92, 915,457.26 and 376,925.56 is: 520,171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,356.92 : 915,457.26 = 376,925.56 : x
  2. Step 2: Convert to fraction form
    663,356.92/915,457.26 = 376,925.56/x
  3. Step 3: Cross multiply
    663,356.92x = 915,457.26 × 376,925.56
  4. Step 4: Simplify right side
    663,356.92x = 345,059,240,381.57
  5. Step 5: Solve for x
    x = 345,059,240,381.57/663,356.92
  6. Step 6: Final answer
    x = 520,171.31

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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.