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Finding the Fourth Proportional to 554,913.60, 765,783.44 and 313,206.40

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Solution

The fourth proportional to 554,913.60, 765,783.44 and 313,206.40 is: 432,226.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,913.60 : 765,783.44 = 313,206.40 : x
  2. Step 2: Convert to fraction form
    554,913.60/765,783.44 = 313,206.40/x
  3. Step 3: Cross multiply
    554,913.60x = 765,783.44 × 313,206.40
  4. Step 4: Simplify right side
    554,913.60x = 239,848,274,422.02
  5. Step 5: Solve for x
    x = 239,848,274,422.02/554,913.60
  6. Step 6: Final answer
    x = 432,226.34

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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.