Home / 487,986.75-673,421.59-273,126.80

Finding the Fourth Proportional to 487,986.75, 673,421.59 and 273,126.80

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Solution

The fourth proportional to 487,986.75, 673,421.59 and 273,126.80 is: 376,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,986.75 : 673,421.59 = 273,126.80 : x
  2. Step 2: Convert to fraction form
    487,986.75/673,421.59 = 273,126.80/x
  3. Step 3: Cross multiply
    487,986.75x = 673,421.59 × 273,126.80
  4. Step 4: Simplify right side
    487,986.75x = 183,929,483,927.61
  5. Step 5: Solve for x
    x = 183,929,483,927.61/487,986.75
  6. Step 6: Final answer
    x = 376,914.91

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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.