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Finding the Fourth Proportional to 978,623.64, 1,351,106.19 and 652,396.14

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Solution

The fourth proportional to 978,623.64, 1,351,106.19 and 652,396.14 is: 900,710.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,623.64 : 1,351,106.19 = 652,396.14 : x
  2. Step 2: Convert to fraction form
    978,623.64/1,351,106.19 = 652,396.14/x
  3. Step 3: Cross multiply
    978,623.64x = 1,351,106.19 × 652,396.14
  4. Step 4: Simplify right side
    978,623.64x = 881,456,463,086.11
  5. Step 5: Solve for x
    x = 881,456,463,086.11/978,623.64
  6. Step 6: Final answer
    x = 900,710.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.