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Finding the Fourth Proportional to 548,409.86, 756,844.18 and 306,714.93

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Solution

The fourth proportional to 548,409.86, 756,844.18 and 306,714.93 is: 423,288.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,409.86 : 756,844.18 = 306,714.93 : x
  2. Step 2: Convert to fraction form
    548,409.86/756,844.18 = 306,714.93/x
  3. Step 3: Cross multiply
    548,409.86x = 756,844.18 × 306,714.93
  4. Step 4: Simplify right side
    548,409.86x = 232,135,404,371.81
  5. Step 5: Solve for x
    x = 232,135,404,371.81/548,409.86
  6. Step 6: Final answer
    x = 423,288.17

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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.