Home / 455,639.89-628,756.99-272,085.58

Finding the Fourth Proportional to 455,639.89, 628,756.99 and 272,085.58

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Solution

The fourth proportional to 455,639.89, 628,756.99 and 272,085.58 is: 375,462.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,639.89 : 628,756.99 = 272,085.58 : x
  2. Step 2: Convert to fraction form
    455,639.89/628,756.99 = 272,085.58/x
  3. Step 3: Cross multiply
    455,639.89x = 628,756.99 × 272,085.58
  4. Step 4: Simplify right side
    455,639.89x = 171,075,711,939.42
  5. Step 5: Solve for x
    x = 171,075,711,939.42/455,639.89
  6. Step 6: Final answer
    x = 375,462.54

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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.