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Finding the Fourth Proportional to 565,005.12, 779,381.37 and 338,519.40

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Solution

The fourth proportional to 565,005.12, 779,381.37 and 338,519.40 is: 466,961.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,005.12 : 779,381.37 = 338,519.40 : x
  2. Step 2: Convert to fraction form
    565,005.12/779,381.37 = 338,519.40/x
  3. Step 3: Cross multiply
    565,005.12x = 779,381.37 × 338,519.40
  4. Step 4: Simplify right side
    565,005.12x = 263,835,713,743.58
  5. Step 5: Solve for x
    x = 263,835,713,743.58/565,005.12
  6. Step 6: Final answer
    x = 466,961.63

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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.