Home / 1,420,508.50-1,960,290.12-775,928.86

Finding the Fourth Proportional to 1,420,508.50, 1,960,290.12 and 775,928.86

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Solution

The fourth proportional to 1,420,508.50, 1,960,290.12 and 775,928.86 is: 1,070,775.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,508.50 : 1,960,290.12 = 775,928.86 : x
  2. Step 2: Convert to fraction form
    1,420,508.50/1,960,290.12 = 775,928.86/x
  3. Step 3: Cross multiply
    1,420,508.50x = 1,960,290.12 × 775,928.86
  4. Step 4: Simplify right side
    1,420,508.50x = 1,521,045,678,080.86
  5. Step 5: Solve for x
    x = 1,521,045,678,080.86/1,420,508.50
  6. Step 6: Final answer
    x = 1,070,775.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.