Home / 1,120,210.56-1,680,316.25-278,762.31

Finding the Fourth Proportional to 1,120,210.56, 1,680,316.25 and 278,762.31

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Solution

The fourth proportional to 1,120,210.56, 1,680,316.25 and 278,762.31 is: 418,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,210.56 : 1,680,316.25 = 278,762.31 : x
  2. Step 2: Convert to fraction form
    1,120,210.56/1,680,316.25 = 278,762.31/x
  3. Step 3: Cross multiply
    1,120,210.56x = 1,680,316.25 × 278,762.31
  4. Step 4: Simplify right side
    1,120,210.56x = 468,408,837,986.73
  5. Step 5: Solve for x
    x = 468,408,837,986.73/1,120,210.56
  6. Step 6: Final answer
    x = 418,143.57

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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.