Home / 7,800,543.90-11,700,815.85-7,103,814.30

Finding the Fourth Proportional to 7,800,543.90, 11,700,815.85 and 7,103,814.30

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Solution

The fourth proportional to 7,800,543.90, 11,700,815.85 and 7,103,814.30 is: 10,655,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800,543.90 : 11,700,815.85 = 7,103,814.30 : x
  2. Step 2: Convert to fraction form
    7,800,543.90/11,700,815.85 = 7,103,814.30/x
  3. Step 3: Cross multiply
    7,800,543.90x = 11,700,815.85 × 7,103,814.30
  4. Step 4: Simplify right side
    7,800,543.90x = 83,120,422,956,896.66
  5. Step 5: Solve for x
    x = 83,120,422,956,896.66/7,800,543.90
  6. Step 6: Final answer
    x = 10,655,721.45

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Double scale
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Similar ratio
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1.5x scale

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.