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Finding the Fourth Proportional to 487,514.88, 672,775.68 and 286,314.24

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Solution

The fourth proportional to 487,514.88, 672,775.68 and 286,314.24 is: 395,116.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,514.88 : 672,775.68 = 286,314.24 : x
  2. Step 2: Convert to fraction form
    487,514.88/672,775.68 = 286,314.24/x
  3. Step 3: Cross multiply
    487,514.88x = 672,775.68 × 286,314.24
  4. Step 4: Simplify right side
    487,514.88x = 192,625,257,509.68
  5. Step 5: Solve for x
    x = 192,625,257,509.68/487,514.88
  6. Step 6: Final answer
    x = 395,116.67

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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.