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Finding the Fourth Proportional to 978,538.40, 1,467,807.60 and 941,213.60

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Solution

The fourth proportional to 978,538.40, 1,467,807.60 and 941,213.60 is: 1,411,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,538.40 : 1,467,807.60 = 941,213.60 : x
  2. Step 2: Convert to fraction form
    978,538.40/1,467,807.60 = 941,213.60/x
  3. Step 3: Cross multiply
    978,538.40x = 1,467,807.60 × 941,213.60
  4. Step 4: Simplify right side
    978,538.40x = 1,381,520,475,303.36
  5. Step 5: Solve for x
    x = 1,381,520,475,303.36/978,538.40
  6. Step 6: Final answer
    x = 1,411,820.40

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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.