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Finding the Fourth Proportional to 479,590.20, 715,667.67 and 396,646.20

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Solution

The fourth proportional to 479,590.20, 715,667.67 and 396,646.20 is: 591,894.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,590.20 : 715,667.67 = 396,646.20 : x
  2. Step 2: Convert to fraction form
    479,590.20/715,667.67 = 396,646.20/x
  3. Step 3: Cross multiply
    479,590.20x = 715,667.67 × 396,646.20
  4. Step 4: Simplify right side
    479,590.20x = 283,866,861,768.35
  5. Step 5: Solve for x
    x = 283,866,861,768.35/479,590.20
  6. Step 6: Final answer
    x = 591,894.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.