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Finding the Fourth Proportional to 554,809.35, 765,637.15 and 306,451.80

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Solution

The fourth proportional to 554,809.35, 765,637.15 and 306,451.80 is: 422,903.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,809.35 : 765,637.15 = 306,451.80 : x
  2. Step 2: Convert to fraction form
    554,809.35/765,637.15 = 306,451.80/x
  3. Step 3: Cross multiply
    554,809.35x = 765,637.15 × 306,451.80
  4. Step 4: Simplify right side
    554,809.35x = 234,630,885,444.59
  5. Step 5: Solve for x
    x = 234,630,885,444.59/554,809.35
  6. Step 6: Final answer
    x = 422,903.63

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Similar ratio
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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.