Home / 7,877,630.40-11,821,111.20-5,742,340.80

Finding the Fourth Proportional to 7,877,630.40, 11,821,111.20 and 5,742,340.80

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Solution

The fourth proportional to 7,877,630.40, 11,821,111.20 and 5,742,340.80 is: 8,616,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877,630.40 : 11,821,111.20 = 5,742,340.80 : x
  2. Step 2: Convert to fraction form
    7,877,630.40/11,821,111.20 = 5,742,340.80/x
  3. Step 3: Cross multiply
    7,877,630.40x = 11,821,111.20 × 5,742,340.80
  4. Step 4: Simplify right side
    7,877,630.40x = 67,880,849,145,096.95
  5. Step 5: Solve for x
    x = 67,880,849,145,096.95/7,877,630.40
  6. Step 6: Final answer
    x = 8,616,912.15

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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.