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Finding the Fourth Proportional to 553,520.40, 830,280.60 and 455,105.40

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Solution

The fourth proportional to 553,520.40, 830,280.60 and 455,105.40 is: 682,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,520.40 : 830,280.60 = 455,105.40 : x
  2. Step 2: Convert to fraction form
    553,520.40/830,280.60 = 455,105.40/x
  3. Step 3: Cross multiply
    553,520.40x = 830,280.60 × 455,105.40
  4. Step 4: Simplify right side
    553,520.40x = 377,865,184,575.24
  5. Step 5: Solve for x
    x = 377,865,184,575.24/553,520.40
  6. Step 6: Final answer
    x = 682,658.10

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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.