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Finding the Fourth Proportional to 978,763.30, 1,467,670.28 and 574,087.76

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Solution

The fourth proportional to 978,763.30, 1,467,670.28 and 574,087.76 is: 860,853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,763.30 : 1,467,670.28 = 574,087.76 : x
  2. Step 2: Convert to fraction form
    978,763.30/1,467,670.28 = 574,087.76/x
  3. Step 3: Cross multiply
    978,763.30x = 1,467,670.28 × 574,087.76
  4. Step 4: Simplify right side
    978,763.30x = 842,571,543,463.77
  5. Step 5: Solve for x
    x = 842,571,543,463.77/978,763.30
  6. Step 6: Final answer
    x = 860,853.23

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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.