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Finding the Fourth Proportional to 468,674.98, 646,783.31 and 287,486.82

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Solution

The fourth proportional to 468,674.98, 646,783.31 and 287,486.82 is: 396,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,674.98 : 646,783.31 = 287,486.82 : x
  2. Step 2: Convert to fraction form
    468,674.98/646,783.31 = 287,486.82/x
  3. Step 3: Cross multiply
    468,674.98x = 646,783.31 × 287,486.82
  4. Step 4: Simplify right side
    468,674.98x = 185,941,677,739.69
  5. Step 5: Solve for x
    x = 185,941,677,739.69/468,674.98
  6. Step 6: Final answer
    x = 396,739.08

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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.