Home / 738,981.87-1,019,794.53-399,450.12

Finding the Fourth Proportional to 738,981.87, 1,019,794.53 and 399,450.12

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Solution

The fourth proportional to 738,981.87, 1,019,794.53 and 399,450.12 is: 551,240.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,981.87 : 1,019,794.53 = 399,450.12 : x
  2. Step 2: Convert to fraction form
    738,981.87/1,019,794.53 = 399,450.12/x
  3. Step 3: Cross multiply
    738,981.87x = 1,019,794.53 × 399,450.12
  4. Step 4: Simplify right side
    738,981.87x = 407,357,047,383.84
  5. Step 5: Solve for x
    x = 407,357,047,383.84/738,981.87
  6. Step 6: Final answer
    x = 551,240.92

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.