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Finding the Fourth Proportional to 552,817.12, 828,219.66 and 383,980.72

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Solution

The fourth proportional to 552,817.12, 828,219.66 and 383,980.72 is: 575,272.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,817.12 : 828,219.66 = 383,980.72 : x
  2. Step 2: Convert to fraction form
    552,817.12/828,219.66 = 383,980.72/x
  3. Step 3: Cross multiply
    552,817.12x = 828,219.66 × 383,980.72
  4. Step 4: Simplify right side
    552,817.12x = 318,020,381,364.96
  5. Step 5: Solve for x
    x = 318,020,381,364.96/552,817.12
  6. Step 6: Final answer
    x = 575,272.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.