Home / 643,929.30-888,578.01-357,426.84

Finding the Fourth Proportional to 643,929.30, 888,578.01 and 357,426.84

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Solution

The fourth proportional to 643,929.30, 888,578.01 and 357,426.84 is: 493,224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,929.30 : 888,578.01 = 357,426.84 : x
  2. Step 2: Convert to fraction form
    643,929.30/888,578.01 = 357,426.84/x
  3. Step 3: Cross multiply
    643,929.30x = 888,578.01 × 357,426.84
  4. Step 4: Simplify right side
    643,929.30x = 317,601,630,207.79
  5. Step 5: Solve for x
    x = 317,601,630,207.79/643,929.30
  6. Step 6: Final answer
    x = 493,224.38

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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.