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Finding the Fourth Proportional to 618,235.94, 855,043.89 and 554,550.50

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Solution

The fourth proportional to 618,235.94, 855,043.89 and 554,550.50 is: 766,964.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,235.94 : 855,043.89 = 554,550.50 : x
  2. Step 2: Convert to fraction form
    618,235.94/855,043.89 = 554,550.50/x
  3. Step 3: Cross multiply
    618,235.94x = 855,043.89 × 554,550.50
  4. Step 4: Simplify right side
    618,235.94x = 474,165,016,721.45
  5. Step 5: Solve for x
    x = 474,165,016,721.45/618,235.94
  6. Step 6: Final answer
    x = 766,964.50

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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.