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Finding the Fourth Proportional to 620,570.40, 931,028.40 and 305,037.60

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Solution

The fourth proportional to 620,570.40, 931,028.40 and 305,037.60 is: 457,641.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,570.40 : 931,028.40 = 305,037.60 : x
  2. Step 2: Convert to fraction form
    620,570.40/931,028.40 = 305,037.60/x
  3. Step 3: Cross multiply
    620,570.40x = 931,028.40 × 305,037.60
  4. Step 4: Simplify right side
    620,570.40x = 283,998,668,667.84
  5. Step 5: Solve for x
    x = 283,998,668,667.84/620,570.40
  6. Step 6: Final answer
    x = 457,641.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.