Home / 643,271.99-887,821.64-356,884.34

Finding the Fourth Proportional to 643,271.99, 887,821.64 and 356,884.34

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Solution

The fourth proportional to 643,271.99, 887,821.64 and 356,884.34 is: 492,559.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,271.99 : 887,821.64 = 356,884.34 : x
  2. Step 2: Convert to fraction form
    643,271.99/887,821.64 = 356,884.34/x
  3. Step 3: Cross multiply
    643,271.99x = 887,821.64 × 356,884.34
  4. Step 4: Simplify right side
    643,271.99x = 316,849,633,805.59
  5. Step 5: Solve for x
    x = 316,849,633,805.59/643,271.99
  6. Step 6: Final answer
    x = 492,559.35

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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.