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Finding the Fourth Proportional to 555,626.81, 766,749.16 and 326,180.40

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Solution

The fourth proportional to 555,626.81, 766,749.16 and 326,180.40 is: 450,119.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,626.81 : 766,749.16 = 326,180.40 : x
  2. Step 2: Convert to fraction form
    555,626.81/766,749.16 = 326,180.40/x
  3. Step 3: Cross multiply
    555,626.81x = 766,749.16 × 326,180.40
  4. Step 4: Simplify right side
    555,626.81x = 250,098,548,809.89
  5. Step 5: Solve for x
    x = 250,098,548,809.89/555,626.81
  6. Step 6: Final answer
    x = 450,119.66

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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.