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Finding the Fourth Proportional to 553,612.40, 828,450.30 and 384,338.60

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Solution

The fourth proportional to 553,612.40, 828,450.30 and 384,338.60 is: 575,141.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,612.40 : 828,450.30 = 384,338.60 : x
  2. Step 2: Convert to fraction form
    553,612.40/828,450.30 = 384,338.60/x
  3. Step 3: Cross multiply
    553,612.40x = 828,450.30 × 384,338.60
  4. Step 4: Simplify right side
    553,612.40x = 318,405,428,471.58
  5. Step 5: Solve for x
    x = 318,405,428,471.58/553,612.40
  6. Step 6: Final answer
    x = 575,141.43

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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.