Home / 7,877,633.40-11,821,115.70-5,742,343.80

Finding the Fourth Proportional to 7,877,633.40, 11,821,115.70 and 5,742,343.80

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Solution

The fourth proportional to 7,877,633.40, 11,821,115.70 and 5,742,343.80 is: 8,616,916.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877,633.40 : 11,821,115.70 = 5,742,343.80 : x
  2. Step 2: Convert to fraction form
    7,877,633.40/11,821,115.70 = 5,742,343.80/x
  3. Step 3: Cross multiply
    7,877,633.40x = 11,821,115.70 × 5,742,343.80
  4. Step 4: Simplify right side
    7,877,633.40x = 67,880,910,448,977.66
  5. Step 5: Solve for x
    x = 67,880,910,448,977.66/7,877,633.40
  6. Step 6: Final answer
    x = 8,616,916.66

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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.