Home / 738,688.80-1,107,709.20-339,196.80

Finding the Fourth Proportional to 738,688.80, 1,107,709.20 and 339,196.80

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Solution

The fourth proportional to 738,688.80, 1,107,709.20 and 339,196.80 is: 508,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,688.80 : 1,107,709.20 = 339,196.80 : x
  2. Step 2: Convert to fraction form
    738,688.80/1,107,709.20 = 339,196.80/x
  3. Step 3: Cross multiply
    738,688.80x = 1,107,709.20 × 339,196.80
  4. Step 4: Simplify right side
    738,688.80x = 375,731,415,970.56
  5. Step 5: Solve for x
    x = 375,731,415,970.56/738,688.80
  6. Step 6: Final answer
    x = 508,646.42

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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.