Home / 628,653.44-867,560.49-387,075.40

Finding the Fourth Proportional to 628,653.44, 867,560.49 and 387,075.40

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Solution

The fourth proportional to 628,653.44, 867,560.49 and 387,075.40 is: 534,175.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,653.44 : 867,560.49 = 387,075.40 : x
  2. Step 2: Convert to fraction form
    628,653.44/867,560.49 = 387,075.40/x
  3. Step 3: Cross multiply
    628,653.44x = 867,560.49 × 387,075.40
  4. Step 4: Simplify right side
    628,653.44x = 335,811,317,417.77
  5. Step 5: Solve for x
    x = 335,811,317,417.77/628,653.44
  6. Step 6: Final answer
    x = 534,175.58

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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.