Home / 5,280,345.09-7,920,450.68-1,686,066.75

Finding the Fourth Proportional to 5,280,345.09, 7,920,450.68 and 1,686,066.75

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Solution

The fourth proportional to 5,280,345.09, 7,920,450.68 and 1,686,066.75 is: 2,529,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,345.09 : 7,920,450.68 = 1,686,066.75 : x
  2. Step 2: Convert to fraction form
    5,280,345.09/7,920,450.68 = 1,686,066.75/x
  3. Step 3: Cross multiply
    5,280,345.09x = 7,920,450.68 × 1,686,066.75
  4. Step 4: Simplify right side
    5,280,345.09x = 13,354,408,528,132.56
  5. Step 5: Solve for x
    x = 13,354,408,528,132.56/5,280,345.09
  6. Step 6: Final answer
    x = 2,529,078.74

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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.