Home / 487,429.05-672,714.75-272,581.21

Finding the Fourth Proportional to 487,429.05, 672,714.75 and 272,581.21

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Solution

The fourth proportional to 487,429.05, 672,714.75 and 272,581.21 is: 376,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,429.05 : 672,714.75 = 272,581.21 : x
  2. Step 2: Convert to fraction form
    487,429.05/672,714.75 = 272,581.21/x
  3. Step 3: Cross multiply
    487,429.05x = 672,714.75 × 272,581.21
  4. Step 4: Simplify right side
    487,429.05x = 183,369,400,539.85
  5. Step 5: Solve for x
    x = 183,369,400,539.85/487,429.05
  6. Step 6: Final answer
    x = 376,197.11

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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.