Home / 738,859.84-1,108,289.76-339,836.22

Finding the Fourth Proportional to 738,859.84, 1,108,289.76 and 339,836.22

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Solution

The fourth proportional to 738,859.84, 1,108,289.76 and 339,836.22 is: 509,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,859.84 : 1,108,289.76 = 339,836.22 : x
  2. Step 2: Convert to fraction form
    738,859.84/1,108,289.76 = 339,836.22/x
  3. Step 3: Cross multiply
    738,859.84x = 1,108,289.76 × 339,836.22
  4. Step 4: Simplify right side
    738,859.84x = 376,637,001,428.72
  5. Step 5: Solve for x
    x = 376,637,001,428.72/738,859.84
  6. Step 6: Final answer
    x = 509,754.33

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Double scale
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Similar ratio
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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.