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Finding the Fourth Proportional to 630,081.96, 869,514.48 and 358,151.52

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Solution

The fourth proportional to 630,081.96, 869,514.48 and 358,151.52 is: 494,249.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,081.96 : 869,514.48 = 358,151.52 : x
  2. Step 2: Convert to fraction form
    630,081.96/869,514.48 = 358,151.52/x
  3. Step 3: Cross multiply
    630,081.96x = 869,514.48 × 358,151.52
  4. Step 4: Simplify right side
    630,081.96x = 311,417,932,674.01
  5. Step 5: Solve for x
    x = 311,417,932,674.01/630,081.96
  6. Step 6: Final answer
    x = 494,249.88

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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.