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Finding the Fourth Proportional to 664,028.16, 916,356.96 and 362,220

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Solution

The fourth proportional to 664,028.16, 916,356.96 and 362,220 is: 499,862.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,028.16 : 916,356.96 = 362,220 : x
  2. Step 2: Convert to fraction form
    664,028.16/916,356.96 = 362,220/x
  3. Step 3: Cross multiply
    664,028.16x = 916,356.96 × 362,220
  4. Step 4: Simplify right side
    664,028.16x = 331,922,818,051.20
  5. Step 5: Solve for x
    x = 331,922,818,051.20/664,028.16
  6. Step 6: Final answer
    x = 499,862.56

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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.