Home / 891,619.50-1,230,434.79-509,654.49

Finding the Fourth Proportional to 891,619.50, 1,230,434.79 and 509,654.49

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Solution

The fourth proportional to 891,619.50, 1,230,434.79 and 509,654.49 is: 703,323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,619.50 : 1,230,434.79 = 509,654.49 : x
  2. Step 2: Convert to fraction form
    891,619.50/1,230,434.79 = 509,654.49/x
  3. Step 3: Cross multiply
    891,619.50x = 1,230,434.79 × 509,654.49
  4. Step 4: Simplify right side
    891,619.50x = 627,096,615,375.71
  5. Step 5: Solve for x
    x = 627,096,615,375.71/891,619.50
  6. Step 6: Final answer
    x = 703,323.13

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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.