Home / 1,920,898.40-2,879,345.28-721,994.72

Finding the Fourth Proportional to 1,920,898.40, 2,879,345.28 and 721,994.72

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Solution

The fourth proportional to 1,920,898.40, 2,879,345.28 and 721,994.72 is: 1,082,239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,898.40 : 2,879,345.28 = 721,994.72 : x
  2. Step 2: Convert to fraction form
    1,920,898.40/2,879,345.28 = 721,994.72/x
  3. Step 3: Cross multiply
    1,920,898.40x = 2,879,345.28 × 721,994.72
  4. Step 4: Simplify right side
    1,920,898.40x = 2,078,872,089,216.92
  5. Step 5: Solve for x
    x = 2,078,872,089,216.92/1,920,898.40
  6. Step 6: Final answer
    x = 1,082,239.48

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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.