Home / 1,521,341.19-2,099,591.69-842,277.69

Finding the Fourth Proportional to 1,521,341.19, 2,099,591.69 and 842,277.69

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Solution

The fourth proportional to 1,521,341.19, 2,099,591.69 and 842,277.69 is: 1,162,421.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,341.19 : 2,099,591.69 = 842,277.69 : x
  2. Step 2: Convert to fraction form
    1,521,341.19/2,099,591.69 = 842,277.69/x
  3. Step 3: Cross multiply
    1,521,341.19x = 2,099,591.69 × 842,277.69
  4. Step 4: Simplify right side
    1,521,341.19x = 1,768,439,234,385.01
  5. Step 5: Solve for x
    x = 1,768,439,234,385.01/1,521,341.19
  6. Step 6: Final answer
    x = 1,162,421.19

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Half scale
Find fourth proportional to 3,042,682.38, 4,199,183.37 and 1,684,555.38
Double scale
Find fourth proportional to 1,521,342.19, 2,099,593.07 and 842,278.69
Similar ratio
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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.