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Finding the Fourth Proportional to 455,030.92, 628,170.01 and 283,004.34

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Solution

The fourth proportional to 455,030.92, 628,170.01 and 283,004.34 is: 390,687.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,030.92 : 628,170.01 = 283,004.34 : x
  2. Step 2: Convert to fraction form
    455,030.92/628,170.01 = 283,004.34/x
  3. Step 3: Cross multiply
    455,030.92x = 628,170.01 × 283,004.34
  4. Step 4: Simplify right side
    455,030.92x = 177,774,839,087.84
  5. Step 5: Solve for x
    x = 177,774,839,087.84/455,030.92
  6. Step 6: Final answer
    x = 390,687.38

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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.