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Finding the Fourth Proportional to 586,786.32, 809,766 and 318,514.32

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Solution

The fourth proportional to 586,786.32, 809,766 and 318,514.32 is: 439,550.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,786.32 : 809,766 = 318,514.32 : x
  2. Step 2: Convert to fraction form
    586,786.32/809,766 = 318,514.32/x
  3. Step 3: Cross multiply
    586,786.32x = 809,766 × 318,514.32
  4. Step 4: Simplify right side
    586,786.32x = 257,922,066,849.12
  5. Step 5: Solve for x
    x = 257,922,066,849.12/586,786.32
  6. Step 6: Final answer
    x = 439,550.24

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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.