Home / 738,744.60-1,107,460.80-438,906.90

Finding the Fourth Proportional to 738,744.60, 1,107,460.80 and 438,906.90

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Solution

The fourth proportional to 738,744.60, 1,107,460.80 and 438,906.90 is: 657,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,744.60 : 1,107,460.80 = 438,906.90 : x
  2. Step 2: Convert to fraction form
    738,744.60/1,107,460.80 = 438,906.90/x
  3. Step 3: Cross multiply
    738,744.60x = 1,107,460.80 × 438,906.90
  4. Step 4: Simplify right side
    738,744.60x = 486,072,186,599.52
  5. Step 5: Solve for x
    x = 486,072,186,599.52/738,744.60
  6. Step 6: Final answer
    x = 657,970.54

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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.