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Finding the Fourth Proportional to 533,722.72, 736,416.78 and 318,820.72

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Solution

The fourth proportional to 533,722.72, 736,416.78 and 318,820.72 is: 439,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,722.72 : 736,416.78 = 318,820.72 : x
  2. Step 2: Convert to fraction form
    533,722.72/736,416.78 = 318,820.72/x
  3. Step 3: Cross multiply
    533,722.72x = 736,416.78 × 318,820.72
  4. Step 4: Simplify right side
    533,722.72x = 234,784,928,019.68
  5. Step 5: Solve for x
    x = 234,784,928,019.68/533,722.72
  6. Step 6: Final answer
    x = 439,900.57

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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.