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Finding the Fourth Proportional to 624,009.40, 936,014.10 and 340,574.20

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Solution

The fourth proportional to 624,009.40, 936,014.10 and 340,574.20 is: 510,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,009.40 : 936,014.10 = 340,574.20 : x
  2. Step 2: Convert to fraction form
    624,009.40/936,014.10 = 340,574.20/x
  3. Step 3: Cross multiply
    624,009.40x = 936,014.10 × 340,574.20
  4. Step 4: Simplify right side
    624,009.40x = 318,782,253,296.22
  5. Step 5: Solve for x
    x = 318,782,253,296.22/624,009.40
  6. Step 6: Final answer
    x = 510,861.30

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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.