Home / 462,979.20-638,907.84-261,782.40

Finding the Fourth Proportional to 462,979.20, 638,907.84 and 261,782.40

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Solution

The fourth proportional to 462,979.20, 638,907.84 and 261,782.40 is: 361,257.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,979.20 : 638,907.84 = 261,782.40 : x
  2. Step 2: Convert to fraction form
    462,979.20/638,907.84 = 261,782.40/x
  3. Step 3: Cross multiply
    462,979.20x = 638,907.84 × 261,782.40
  4. Step 4: Simplify right side
    462,979.20x = 167,254,827,734.02
  5. Step 5: Solve for x
    x = 167,254,827,734.02/462,979.20
  6. Step 6: Final answer
    x = 361,257.76

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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.