Home / 486,514.02-672,037.58-391,379.52

Finding the Fourth Proportional to 486,514.02, 672,037.58 and 391,379.52

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Solution

The fourth proportional to 486,514.02, 672,037.58 and 391,379.52 is: 540,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,514.02 : 672,037.58 = 391,379.52 : x
  2. Step 2: Convert to fraction form
    486,514.02/672,037.58 = 391,379.52/x
  3. Step 3: Cross multiply
    486,514.02x = 672,037.58 × 391,379.52
  4. Step 4: Simplify right side
    486,514.02x = 263,021,745,482.36
  5. Step 5: Solve for x
    x = 263,021,745,482.36/486,514.02
  6. Step 6: Final answer
    x = 540,625.21

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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.