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Finding the Fourth Proportional to 664,133.78, 916,503.45 and 362,327.78

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Solution

The fourth proportional to 664,133.78, 916,503.45 and 362,327.78 is: 500,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,133.78 : 916,503.45 = 362,327.78 : x
  2. Step 2: Convert to fraction form
    664,133.78/916,503.45 = 362,327.78/x
  3. Step 3: Cross multiply
    664,133.78x = 916,503.45 × 362,327.78
  4. Step 4: Simplify right side
    664,133.78x = 332,074,660,400.84
  5. Step 5: Solve for x
    x = 332,074,660,400.84/664,133.78
  6. Step 6: Final answer
    x = 500,011.70

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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.