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Finding the Fourth Proportional to 451,731, 623,502.06 and 306,782.04

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Solution

The fourth proportional to 451,731, 623,502.06 and 306,782.04 is: 423,436.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,731 : 623,502.06 = 306,782.04 : x
  2. Step 2: Convert to fraction form
    451,731/623,502.06 = 306,782.04/x
  3. Step 3: Cross multiply
    451,731x = 623,502.06 × 306,782.04
  4. Step 4: Simplify right side
    451,731x = 191,279,233,911.00
  5. Step 5: Solve for x
    x = 191,279,233,911.00/451,731
  6. Step 6: Final answer
    x = 423,436.15

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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.