Home / 615,939-849,971.88-386,619.50

Finding the Fourth Proportional to 615,939, 849,971.88 and 386,619.50

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Solution

The fourth proportional to 615,939, 849,971.88 and 386,619.50 is: 533,519.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,939 : 849,971.88 = 386,619.50 : x
  2. Step 2: Convert to fraction form
    615,939/849,971.88 = 386,619.50/x
  3. Step 3: Cross multiply
    615,939x = 849,971.88 × 386,619.50
  4. Step 4: Simplify right side
    615,939x = 328,615,703,259.66
  5. Step 5: Solve for x
    x = 328,615,703,259.66/615,939
  6. Step 6: Final answer
    x = 533,519.88

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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.