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Finding the Fourth Proportional to 613,276.20, 919,914.30 and 276,696.90

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Solution

The fourth proportional to 613,276.20, 919,914.30 and 276,696.90 is: 415,045.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,276.20 : 919,914.30 = 276,696.90 : x
  2. Step 2: Convert to fraction form
    613,276.20/919,914.30 = 276,696.90/x
  3. Step 3: Cross multiply
    613,276.20x = 919,914.30 × 276,696.90
  4. Step 4: Simplify right side
    613,276.20x = 254,537,435,075.67
  5. Step 5: Solve for x
    x = 254,537,435,075.67/613,276.20
  6. Step 6: Final answer
    x = 415,045.35

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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.