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Finding the Fourth Proportional to 646,174.59, 891,804.50 and 370,639.95

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Solution

The fourth proportional to 646,174.59, 891,804.50 and 370,639.95 is: 511,531.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,174.59 : 891,804.50 = 370,639.95 : x
  2. Step 2: Convert to fraction form
    646,174.59/891,804.50 = 370,639.95/x
  3. Step 3: Cross multiply
    646,174.59x = 891,804.50 × 370,639.95
  4. Step 4: Simplify right side
    646,174.59x = 330,538,375,289.78
  5. Step 5: Solve for x
    x = 330,538,375,289.78/646,174.59
  6. Step 6: Final answer
    x = 511,531.06

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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.