Home / 738,784.67-1,108,675.22-289,449.18

Finding the Fourth Proportional to 738,784.67, 1,108,675.22 and 289,449.18

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Solution

The fourth proportional to 738,784.67, 1,108,675.22 and 289,449.18 is: 434,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,784.67 : 1,108,675.22 = 289,449.18 : x
  2. Step 2: Convert to fraction form
    738,784.67/1,108,675.22 = 289,449.18/x
  3. Step 3: Cross multiply
    738,784.67x = 1,108,675.22 × 289,449.18
  4. Step 4: Simplify right side
    738,784.67x = 320,905,131,868.07
  5. Step 5: Solve for x
    x = 320,905,131,868.07/738,784.67
  6. Step 6: Final answer
    x = 434,368.97

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.