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Finding the Fourth Proportional to 978,626.14, 1,351,109.64 and 652,398.64

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Solution

The fourth proportional to 978,626.14, 1,351,109.64 and 652,398.64 is: 900,713.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,626.14 : 1,351,109.64 = 652,398.64 : x
  2. Step 2: Convert to fraction form
    978,626.14/1,351,109.64 = 652,398.64/x
  3. Step 3: Cross multiply
    978,626.14x = 1,351,109.64 × 652,398.64
  4. Step 4: Simplify right side
    978,626.14x = 881,462,091,626.89
  5. Step 5: Solve for x
    x = 881,462,091,626.89/978,626.14
  6. Step 6: Final answer
    x = 900,713.82

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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.