Home / 1,313,210.50-1,969,815.78-315,938.50

Finding the Fourth Proportional to 1,313,210.50, 1,969,815.78 and 315,938.50

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Solution

The fourth proportional to 1,313,210.50, 1,969,815.78 and 315,938.50 is: 473,907.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,210.50 : 1,969,815.78 = 315,938.50 : x
  2. Step 2: Convert to fraction form
    1,313,210.50/1,969,815.78 = 315,938.50/x
  3. Step 3: Cross multiply
    1,313,210.50x = 1,969,815.78 × 315,938.50
  4. Step 4: Simplify right side
    1,313,210.50x = 622,340,642,809.53
  5. Step 5: Solve for x
    x = 622,340,642,809.53/1,313,210.50
  6. Step 6: Final answer
    x = 473,907.76

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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.