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Finding the Fourth Proportional to 630,433.89, 870,050.30 and 358,586.82

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Solution

The fourth proportional to 630,433.89, 870,050.30 and 358,586.82 is: 494,879.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,433.89 : 870,050.30 = 358,586.82 : x
  2. Step 2: Convert to fraction form
    630,433.89/870,050.30 = 358,586.82/x
  3. Step 3: Cross multiply
    630,433.89x = 870,050.30 × 358,586.82
  4. Step 4: Simplify right side
    630,433.89x = 311,988,568,524.11
  5. Step 5: Solve for x
    x = 311,988,568,524.11/630,433.89
  6. Step 6: Final answer
    x = 494,879.12

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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.