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Finding the Fourth Proportional to 978,880.38, 1,468,009.53 and 665,352.06

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Solution

The fourth proportional to 978,880.38, 1,468,009.53 and 665,352.06 is: 997,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,880.38 : 1,468,009.53 = 665,352.06 : x
  2. Step 2: Convert to fraction form
    978,880.38/1,468,009.53 = 665,352.06/x
  3. Step 3: Cross multiply
    978,880.38x = 1,468,009.53 × 665,352.06
  4. Step 4: Simplify right side
    978,880.38x = 976,743,164,885.13
  5. Step 5: Solve for x
    x = 976,743,164,885.13/978,880.38
  6. Step 6: Final answer
    x = 997,816.67

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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.