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Finding the Fourth Proportional to 522,081.40, 783,122.10 and 342,455.80

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Solution

The fourth proportional to 522,081.40, 783,122.10 and 342,455.80 is: 513,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,081.40 : 783,122.10 = 342,455.80 : x
  2. Step 2: Convert to fraction form
    522,081.40/783,122.10 = 342,455.80/x
  3. Step 3: Cross multiply
    522,081.40x = 783,122.10 × 342,455.80
  4. Step 4: Simplify right side
    522,081.40x = 268,184,705,253.18
  5. Step 5: Solve for x
    x = 268,184,705,253.18/522,081.40
  6. Step 6: Final answer
    x = 513,683.70

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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.