Home / 7,881,130.80-11,812,510.80-3,621,729.60

Finding the Fourth Proportional to 7,881,130.80, 11,812,510.80 and 3,621,729.60

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Solution

The fourth proportional to 7,881,130.80, 11,812,510.80 and 3,621,729.60 is: 5,428,373.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,130.80 : 11,812,510.80 = 3,621,729.60 : x
  2. Step 2: Convert to fraction form
    7,881,130.80/11,812,510.80 = 3,621,729.60/x
  3. Step 3: Cross multiply
    7,881,130.80x = 11,812,510.80 × 3,621,729.60
  4. Step 4: Simplify right side
    7,881,130.80x = 42,781,720,014,679.69
  5. Step 5: Solve for x
    x = 42,781,720,014,679.69/7,881,130.80
  6. Step 6: Final answer
    x = 5,428,373.30

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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.