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Finding the Fourth Proportional to 668,004.82, 921,945.14 and 423,011.94

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Solution

The fourth proportional to 668,004.82, 921,945.14 and 423,011.94 is: 583,818.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,004.82 : 921,945.14 = 423,011.94 : x
  2. Step 2: Convert to fraction form
    668,004.82/921,945.14 = 423,011.94/x
  3. Step 3: Cross multiply
    668,004.82x = 921,945.14 × 423,011.94
  4. Step 4: Simplify right side
    668,004.82x = 389,993,802,244.97
  5. Step 5: Solve for x
    x = 389,993,802,244.97/668,004.82
  6. Step 6: Final answer
    x = 583,818.84

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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.