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Finding the Fourth Proportional to 611,643.88, 844,068.55 and 343,371.88

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Solution

The fourth proportional to 611,643.88, 844,068.55 and 343,371.88 is: 473,853.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,643.88 : 844,068.55 = 343,371.88 : x
  2. Step 2: Convert to fraction form
    611,643.88/844,068.55 = 343,371.88/x
  3. Step 3: Cross multiply
    611,643.88x = 844,068.55 × 343,371.88
  4. Step 4: Simplify right side
    611,643.88x = 289,829,400,642.03
  5. Step 5: Solve for x
    x = 289,829,400,642.03/611,643.88
  6. Step 6: Final answer
    x = 473,853.19

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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.