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Finding the Fourth Proportional to 646,353.88, 891,934.18 and 370,697.50

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Solution

The fourth proportional to 646,353.88, 891,934.18 and 370,697.50 is: 511,542.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,353.88 : 891,934.18 = 370,697.50 : x
  2. Step 2: Convert to fraction form
    646,353.88/891,934.18 = 370,697.50/x
  3. Step 3: Cross multiply
    646,353.88x = 891,934.18 × 370,697.50
  4. Step 4: Simplify right side
    646,353.88x = 330,637,770,690.55
  5. Step 5: Solve for x
    x = 330,637,770,690.55/646,353.88
  6. Step 6: Final answer
    x = 511,542.95

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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.