Home / 535,338.42-738,828.74-320,478.42

Finding the Fourth Proportional to 535,338.42, 738,828.74 and 320,478.42

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Solution

The fourth proportional to 535,338.42, 738,828.74 and 320,478.42 is: 442,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,338.42 : 738,828.74 = 320,478.42 : x
  2. Step 2: Convert to fraction form
    535,338.42/738,828.74 = 320,478.42/x
  3. Step 3: Cross multiply
    535,338.42x = 738,828.74 × 320,478.42
  4. Step 4: Simplify right side
    535,338.42x = 236,778,670,817.60
  5. Step 5: Solve for x
    x = 236,778,670,817.60/535,338.42
  6. Step 6: Final answer
    x = 442,297.18

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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.