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Finding the Fourth Proportional to 651,661.32, 977,626.80 and 314,936.28

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Solution

The fourth proportional to 651,661.32, 977,626.80 and 314,936.28 is: 472,469.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,661.32 : 977,626.80 = 314,936.28 : x
  2. Step 2: Convert to fraction form
    651,661.32/977,626.80 = 314,936.28/x
  3. Step 3: Cross multiply
    651,661.32x = 977,626.80 × 314,936.28
  4. Step 4: Simplify right side
    651,661.32x = 307,890,147,620.30
  5. Step 5: Solve for x
    x = 307,890,147,620.30/651,661.32
  6. Step 6: Final answer
    x = 472,469.58

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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.