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Finding the Fourth Proportional to 554,479.20, 765,185.88 and 306,129.15

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Solution

The fourth proportional to 554,479.20, 765,185.88 and 306,129.15 is: 422,460.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,479.20 : 765,185.88 = 306,129.15 : x
  2. Step 2: Convert to fraction form
    554,479.20/765,185.88 = 306,129.15/x
  3. Step 3: Cross multiply
    554,479.20x = 765,185.88 × 306,129.15
  4. Step 4: Simplify right side
    554,479.20x = 234,245,703,036.40
  5. Step 5: Solve for x
    x = 234,245,703,036.40/554,479.20
  6. Step 6: Final answer
    x = 422,460.76

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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.