Home / 738,768.56-1,107,709.32-338,908.28

Finding the Fourth Proportional to 738,768.56, 1,107,709.32 and 338,908.28

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Solution

The fourth proportional to 738,768.56, 1,107,709.32 and 338,908.28 is: 508,158.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,768.56 : 1,107,709.32 = 338,908.28 : x
  2. Step 2: Convert to fraction form
    738,768.56/1,107,709.32 = 338,908.28/x
  3. Step 3: Cross multiply
    738,768.56x = 1,107,709.32 × 338,908.28
  4. Step 4: Simplify right side
    738,768.56x = 375,411,860,381.17
  5. Step 5: Solve for x
    x = 375,411,860,381.17/738,768.56
  6. Step 6: Final answer
    x = 508,158.96

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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.