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Finding the Fourth Proportional to 700,929.38, 967,281.30 and 378,638.48

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Solution

The fourth proportional to 700,929.38, 967,281.30 and 378,638.48 is: 522,520.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,929.38 : 967,281.30 = 378,638.48 : x
  2. Step 2: Convert to fraction form
    700,929.38/967,281.30 = 378,638.48/x
  3. Step 3: Cross multiply
    700,929.38x = 967,281.30 × 378,638.48
  4. Step 4: Simplify right side
    700,929.38x = 366,249,923,582.63
  5. Step 5: Solve for x
    x = 366,249,923,582.63/700,929.38
  6. Step 6: Final answer
    x = 522,520.43

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1.5x scale

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.