Home / 656,320.56-983,372.40-403,072.80

Finding the Fourth Proportional to 656,320.56, 983,372.40 and 403,072.80

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Solution

The fourth proportional to 656,320.56, 983,372.40 and 403,072.80 is: 603,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,320.56 : 983,372.40 = 403,072.80 : x
  2. Step 2: Convert to fraction form
    656,320.56/983,372.40 = 403,072.80/x
  3. Step 3: Cross multiply
    656,320.56x = 983,372.40 × 403,072.80
  4. Step 4: Simplify right side
    656,320.56x = 396,370,666,710.72
  5. Step 5: Solve for x
    x = 396,370,666,710.72/656,320.56
  6. Step 6: Final answer
    x = 603,928.46

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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.