Home / 643,929.69-888,578.49-357,427.23

Finding the Fourth Proportional to 643,929.69, 888,578.49 and 357,427.23

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Solution

The fourth proportional to 643,929.69, 888,578.49 and 357,427.23 is: 493,224.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,929.69 : 888,578.49 = 357,427.23 : x
  2. Step 2: Convert to fraction form
    643,929.69/888,578.49 = 357,427.23/x
  3. Step 3: Cross multiply
    643,929.69x = 888,578.49 × 357,427.23
  4. Step 4: Simplify right side
    643,929.69x = 317,602,148,318.28
  5. Step 5: Solve for x
    x = 317,602,148,318.28/643,929.69
  6. Step 6: Final answer
    x = 493,224.89

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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.