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Finding the Fourth Proportional to 553,680.20, 830,520.30 and 548,431.40

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Solution

The fourth proportional to 553,680.20, 830,520.30 and 548,431.40 is: 822,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,680.20 : 830,520.30 = 548,431.40 : x
  2. Step 2: Convert to fraction form
    553,680.20/830,520.30 = 548,431.40/x
  3. Step 3: Cross multiply
    553,680.20x = 830,520.30 × 548,431.40
  4. Step 4: Simplify right side
    553,680.20x = 455,483,410,857.42
  5. Step 5: Solve for x
    x = 455,483,410,857.42/553,680.20
  6. Step 6: Final answer
    x = 822,647.10

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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.