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Finding the Fourth Proportional to 552,471.80, 828,707.70 and 312,339.20

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Solution

The fourth proportional to 552,471.80, 828,707.70 and 312,339.20 is: 468,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,471.80 : 828,707.70 = 312,339.20 : x
  2. Step 2: Convert to fraction form
    552,471.80/828,707.70 = 312,339.20/x
  3. Step 3: Cross multiply
    552,471.80x = 828,707.70 × 312,339.20
  4. Step 4: Simplify right side
    552,471.80x = 258,837,900,051.84
  5. Step 5: Solve for x
    x = 258,837,900,051.84/552,471.80
  6. Step 6: Final answer
    x = 468,508.80

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Similar ratio
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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.