Home / 1,340,045.65-2,010,145.11-380,426.20

Finding the Fourth Proportional to 1,340,045.65, 2,010,145.11 and 380,426.20

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Solution

The fourth proportional to 1,340,045.65, 2,010,145.11 and 380,426.20 is: 570,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,045.65 : 2,010,145.11 = 380,426.20 : x
  2. Step 2: Convert to fraction form
    1,340,045.65/2,010,145.11 = 380,426.20/x
  3. Step 3: Cross multiply
    1,340,045.65x = 2,010,145.11 × 380,426.20
  4. Step 4: Simplify right side
    1,340,045.65x = 764,711,859,193.92
  5. Step 5: Solve for x
    x = 764,711,859,193.92/1,340,045.65
  6. Step 6: Final answer
    x = 570,661.05

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Half scale
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Double scale
Find fourth proportional to 1,340,046.65, 2,010,146.61 and 380,427.20
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.