Home / 5,280,358.40-7,920,470.64-1,686,079.88

Finding the Fourth Proportional to 5,280,358.40, 7,920,470.64 and 1,686,079.88

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Solution

The fourth proportional to 5,280,358.40, 7,920,470.64 and 1,686,079.88 is: 2,529,098.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,358.40 : 7,920,470.64 = 1,686,079.88 : x
  2. Step 2: Convert to fraction form
    5,280,358.40/7,920,470.64 = 1,686,079.88/x
  3. Step 3: Cross multiply
    5,280,358.40x = 7,920,470.64 × 1,686,079.88
  4. Step 4: Simplify right side
    5,280,358.40x = 13,354,546,186,234.72
  5. Step 5: Solve for x
    x = 13,354,546,186,234.72/5,280,358.40
  6. Step 6: Final answer
    x = 2,529,098.44

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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.