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Finding the Fourth Proportional to 978,783.18, 1,468,709.90 and 379,767.98

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Solution

The fourth proportional to 978,783.18, 1,468,709.90 and 379,767.98 is: 569,859.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,783.18 : 1,468,709.90 = 379,767.98 : x
  2. Step 2: Convert to fraction form
    978,783.18/1,468,709.90 = 379,767.98/x
  3. Step 3: Cross multiply
    978,783.18x = 1,468,709.90 × 379,767.98
  4. Step 4: Simplify right side
    978,783.18x = 557,768,991,929.00
  5. Step 5: Solve for x
    x = 557,768,991,929.00/978,783.18
  6. Step 6: Final answer
    x = 569,859.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.