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Finding the Fourth Proportional to 978,624.14, 1,351,106.88 and 652,396.64

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Solution

The fourth proportional to 978,624.14, 1,351,106.88 and 652,396.64 is: 900,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,624.14 : 1,351,106.88 = 652,396.64 : x
  2. Step 2: Convert to fraction form
    978,624.14/1,351,106.88 = 652,396.64/x
  3. Step 3: Cross multiply
    978,624.14x = 1,351,106.88 × 652,396.64
  4. Step 4: Simplify right side
    978,624.14x = 881,457,588,792.88
  5. Step 5: Solve for x
    x = 881,457,588,792.88/978,624.14
  6. Step 6: Final answer
    x = 900,711.06

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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.