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Finding the Fourth Proportional to 700,678.81, 966,936.72 and 378,388.89

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Solution

The fourth proportional to 700,678.81, 966,936.72 and 378,388.89 is: 522,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,678.81 : 966,936.72 = 378,388.89 : x
  2. Step 2: Convert to fraction form
    700,678.81/966,936.72 = 378,388.89/x
  3. Step 3: Cross multiply
    700,678.81x = 966,936.72 × 378,388.89
  4. Step 4: Simplify right side
    700,678.81x = 365,878,113,126.85
  5. Step 5: Solve for x
    x = 365,878,113,126.85/700,678.81
  6. Step 6: Final answer
    x = 522,176.65

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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.