Home / 7,800,543.90-11,700,815.85-6,805,215.90

Finding the Fourth Proportional to 7,800,543.90, 11,700,815.85 and 6,805,215.90

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Solution

The fourth proportional to 7,800,543.90, 11,700,815.85 and 6,805,215.90 is: 10,207,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800,543.90 : 11,700,815.85 = 6,805,215.90 : x
  2. Step 2: Convert to fraction form
    7,800,543.90/11,700,815.85 = 6,805,215.90/x
  3. Step 3: Cross multiply
    7,800,543.90x = 11,700,815.85 × 6,805,215.90
  4. Step 4: Simplify right side
    7,800,543.90x = 79,626,578,065,392.02
  5. Step 5: Solve for x
    x = 79,626,578,065,392.02/7,800,543.90
  6. Step 6: Final answer
    x = 10,207,823.85

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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.