Home / 1,379,438.70-2,069,222.85-432,840.30

Finding the Fourth Proportional to 1,379,438.70, 2,069,222.85 and 432,840.30

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Solution

The fourth proportional to 1,379,438.70, 2,069,222.85 and 432,840.30 is: 649,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,438.70 : 2,069,222.85 = 432,840.30 : x
  2. Step 2: Convert to fraction form
    1,379,438.70/2,069,222.85 = 432,840.30/x
  3. Step 3: Cross multiply
    1,379,438.70x = 2,069,222.85 × 432,840.30
  4. Step 4: Simplify right side
    1,379,438.70x = 895,643,039,160.86
  5. Step 5: Solve for x
    x = 895,643,039,160.86/1,379,438.70
  6. Step 6: Final answer
    x = 649,280.78

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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.