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Finding the Fourth Proportional to 554,783.76, 765,601.20 and 300,135.15

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Solution

The fourth proportional to 554,783.76, 765,601.20 and 300,135.15 is: 414,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,783.76 : 765,601.20 = 300,135.15 : x
  2. Step 2: Convert to fraction form
    554,783.76/765,601.20 = 300,135.15/x
  3. Step 3: Cross multiply
    554,783.76x = 765,601.20 × 300,135.15
  4. Step 4: Simplify right side
    554,783.76x = 229,783,831,002.18
  5. Step 5: Solve for x
    x = 229,783,831,002.18/554,783.76
  6. Step 6: Final answer
    x = 414,186.30

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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.