Home / 1,283,428.80-1,922,810.40-784,209.60

Finding the Fourth Proportional to 1,283,428.80, 1,922,810.40 and 784,209.60

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Solution

The fourth proportional to 1,283,428.80, 1,922,810.40 and 784,209.60 is: 1,174,889.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283,428.80 : 1,922,810.40 = 784,209.60 : x
  2. Step 2: Convert to fraction form
    1,283,428.80/1,922,810.40 = 784,209.60/x
  3. Step 3: Cross multiply
    1,283,428.80x = 1,922,810.40 × 784,209.60
  4. Step 4: Simplify right side
    1,283,428.80x = 1,507,886,374,659.84
  5. Step 5: Solve for x
    x = 1,507,886,374,659.84/1,283,428.80
  6. Step 6: Final answer
    x = 1,174,889.00

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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.