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Finding the Fourth Proportional to 552,724.80, 829,087.20 and 420,014.40

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Solution

The fourth proportional to 552,724.80, 829,087.20 and 420,014.40 is: 630,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,724.80 : 829,087.20 = 420,014.40 : x
  2. Step 2: Convert to fraction form
    552,724.80/829,087.20 = 420,014.40/x
  3. Step 3: Cross multiply
    552,724.80x = 829,087.20 × 420,014.40
  4. Step 4: Simplify right side
    552,724.80x = 348,228,562,855.68
  5. Step 5: Solve for x
    x = 348,228,562,855.68/552,724.80
  6. Step 6: Final answer
    x = 630,021.60

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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.