Home / 7,128,511.60-10,669,147.80-6,561,641.20

Finding the Fourth Proportional to 7,128,511.60, 10,669,147.80 and 6,561,641.20

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Solution

The fourth proportional to 7,128,511.60, 10,669,147.80 and 6,561,641.20 is: 9,820,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,511.60 : 10,669,147.80 = 6,561,641.20 : x
  2. Step 2: Convert to fraction form
    7,128,511.60/10,669,147.80 = 6,561,641.20/x
  3. Step 3: Cross multiply
    7,128,511.60x = 10,669,147.80 × 6,561,641.20
  4. Step 4: Simplify right side
    7,128,511.60x = 70,007,119,773,369.37
  5. Step 5: Solve for x
    x = 70,007,119,773,369.37/7,128,511.60
  6. Step 6: Final answer
    x = 9,820,720.47

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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.