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Finding the Fourth Proportional to 700,789.68, 967,090.72 and 398,983.68

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Solution

The fourth proportional to 700,789.68, 967,090.72 and 398,983.68 is: 550,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,789.68 : 967,090.72 = 398,983.68 : x
  2. Step 2: Convert to fraction form
    700,789.68/967,090.72 = 398,983.68/x
  3. Step 3: Cross multiply
    700,789.68x = 967,090.72 × 398,983.68
  4. Step 4: Simplify right side
    700,789.68x = 385,853,414,359.45
  5. Step 5: Solve for x
    x = 385,853,414,359.45/700,789.68
  6. Step 6: Final answer
    x = 550,598.03

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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.