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Finding the Fourth Proportional to 550,421.40, 825,632.10 and 400,344.60

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Solution

The fourth proportional to 550,421.40, 825,632.10 and 400,344.60 is: 600,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,421.40 : 825,632.10 = 400,344.60 : x
  2. Step 2: Convert to fraction form
    550,421.40/825,632.10 = 400,344.60/x
  3. Step 3: Cross multiply
    550,421.40x = 825,632.10 × 400,344.60
  4. Step 4: Simplify right side
    550,421.40x = 330,537,352,821.66
  5. Step 5: Solve for x
    x = 330,537,352,821.66/550,421.40
  6. Step 6: Final answer
    x = 600,516.90

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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.