Home / 1,379,565.32-2,069,659.31-420,106.77

Finding the Fourth Proportional to 1,379,565.32, 2,069,659.31 and 420,106.77

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Solution

The fourth proportional to 1,379,565.32, 2,069,659.31 and 420,106.77 is: 630,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,565.32 : 2,069,659.31 = 420,106.77 : x
  2. Step 2: Convert to fraction form
    1,379,565.32/2,069,659.31 = 420,106.77/x
  3. Step 3: Cross multiply
    1,379,565.32x = 2,069,659.31 × 420,106.77
  4. Step 4: Simplify right side
    1,379,565.32x = 869,477,885,624.00
  5. Step 5: Solve for x
    x = 869,477,885,624.00/1,379,565.32
  6. Step 6: Final answer
    x = 630,254.96

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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.