Home / 643,192.29-887,582.88-356,739.03

Finding the Fourth Proportional to 643,192.29, 887,582.88 and 356,739.03

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Solution

The fourth proportional to 643,192.29, 887,582.88 and 356,739.03 is: 492,287.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,192.29 : 887,582.88 = 356,739.03 : x
  2. Step 2: Convert to fraction form
    643,192.29/887,582.88 = 356,739.03/x
  3. Step 3: Cross multiply
    643,192.29x = 887,582.88 × 356,739.03
  4. Step 4: Simplify right side
    643,192.29x = 316,635,455,655.81
  5. Step 5: Solve for x
    x = 316,635,455,655.81/643,192.29
  6. Step 6: Final answer
    x = 492,287.39

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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.