Home / 448,820.30-672,718.53-280,418.06

Finding the Fourth Proportional to 448,820.30, 672,718.53 and 280,418.06

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Solution

The fourth proportional to 448,820.30, 672,718.53 and 280,418.06 is: 420,307.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,820.30 : 672,718.53 = 280,418.06 : x
  2. Step 2: Convert to fraction form
    448,820.30/672,718.53 = 280,418.06/x
  3. Step 3: Cross multiply
    448,820.30x = 672,718.53 × 280,418.06
  4. Step 4: Simplify right side
    448,820.30x = 188,642,425,108.65
  5. Step 5: Solve for x
    x = 188,642,425,108.65/448,820.30
  6. Step 6: Final answer
    x = 420,307.25

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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.