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Finding the Fourth Proportional to 664,705.76, 917,289.26 and 362,899.76

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Solution

The fourth proportional to 664,705.76, 917,289.26 and 362,899.76 is: 500,799.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,705.76 : 917,289.26 = 362,899.76 : x
  2. Step 2: Convert to fraction form
    664,705.76/917,289.26 = 362,899.76/x
  3. Step 3: Cross multiply
    664,705.76x = 917,289.26 × 362,899.76
  4. Step 4: Simplify right side
    664,705.76x = 332,884,052,304.58
  5. Step 5: Solve for x
    x = 332,884,052,304.58/664,705.76
  6. Step 6: Final answer
    x = 500,799.11

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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.