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Finding the Fourth Proportional to 522,048.40, 783,072.60 and 417,072.40

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Solution

The fourth proportional to 522,048.40, 783,072.60 and 417,072.40 is: 625,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,048.40 : 783,072.60 = 417,072.40 : x
  2. Step 2: Convert to fraction form
    522,048.40/783,072.60 = 417,072.40/x
  3. Step 3: Cross multiply
    522,048.40x = 783,072.60 × 417,072.40
  4. Step 4: Simplify right side
    522,048.40x = 326,597,968,656.24
  5. Step 5: Solve for x
    x = 326,597,968,656.24/522,048.40
  6. Step 6: Final answer
    x = 625,608.60

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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.