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Finding the Fourth Proportional to 680,466.36, 939,036.20 and 374,536.20

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Solution

The fourth proportional to 680,466.36, 939,036.20 and 374,536.20 is: 516,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,466.36 : 939,036.20 = 374,536.20 : x
  2. Step 2: Convert to fraction form
    680,466.36/939,036.20 = 374,536.20/x
  3. Step 3: Cross multiply
    680,466.36x = 939,036.20 × 374,536.20
  4. Step 4: Simplify right side
    680,466.36x = 351,703,050,010.44
  5. Step 5: Solve for x
    x = 351,703,050,010.44/680,466.36
  6. Step 6: Final answer
    x = 516,855.90

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1.5x scale

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.