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Finding the Fourth Proportional to 646,349.88, 891,928.66 and 370,693.50

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Solution

The fourth proportional to 646,349.88, 891,928.66 and 370,693.50 is: 511,537.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,349.88 : 891,928.66 = 370,693.50 : x
  2. Step 2: Convert to fraction form
    646,349.88/891,928.66 = 370,693.50/x
  3. Step 3: Cross multiply
    646,349.88x = 891,928.66 × 370,693.50
  4. Step 4: Simplify right side
    646,349.88x = 330,632,156,725.71
  5. Step 5: Solve for x
    x = 330,632,156,725.71/646,349.88
  6. Step 6: Final answer
    x = 511,537.43

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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.