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Finding the Fourth Proportional to 552,000.30, 828,000.45 and 315,804.30

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Solution

The fourth proportional to 552,000.30, 828,000.45 and 315,804.30 is: 473,706.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,000.30 : 828,000.45 = 315,804.30 : x
  2. Step 2: Convert to fraction form
    552,000.30/828,000.45 = 315,804.30/x
  3. Step 3: Cross multiply
    552,000.30x = 828,000.45 × 315,804.30
  4. Step 4: Simplify right side
    552,000.30x = 261,486,102,511.94
  5. Step 5: Solve for x
    x = 261,486,102,511.94/552,000.30
  6. Step 6: Final answer
    x = 473,706.45

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Double scale
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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.