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Finding the Fourth Proportional to 700,929, 967,281.20 and 378,639.04

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Solution

The fourth proportional to 700,929, 967,281.20 and 378,639.04 is: 522,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,929 : 967,281.20 = 378,639.04 : x
  2. Step 2: Convert to fraction form
    700,929/967,281.20 = 378,639.04/x
  3. Step 3: Cross multiply
    700,929x = 967,281.20 × 378,639.04
  4. Step 4: Simplify right side
    700,929x = 366,250,424,978.05
  5. Step 5: Solve for x
    x = 366,250,424,978.05/700,929
  6. Step 6: Final answer
    x = 522,521.43

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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.