Home / 630,380.88-869,890.19-358,514.91

Finding the Fourth Proportional to 630,380.88, 869,890.19 and 358,514.91

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Solution

The fourth proportional to 630,380.88, 869,890.19 and 358,514.91 is: 494,730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,380.88 : 869,890.19 = 358,514.91 : x
  2. Step 2: Convert to fraction form
    630,380.88/869,890.19 = 358,514.91/x
  3. Step 3: Cross multiply
    630,380.88x = 869,890.19 × 358,514.91
  4. Step 4: Simplify right side
    630,380.88x = 311,868,601,385.16
  5. Step 5: Solve for x
    x = 311,868,601,385.16/630,380.88
  6. Step 6: Final answer
    x = 494,730.43

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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.