Home / 1,299,431.30-1,949,425.05-388,685.21

Finding the Fourth Proportional to 1,299,431.30, 1,949,425.05 and 388,685.21

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Solution

The fourth proportional to 1,299,431.30, 1,949,425.05 and 388,685.21 is: 583,111.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,431.30 : 1,949,425.05 = 388,685.21 : x
  2. Step 2: Convert to fraction form
    1,299,431.30/1,949,425.05 = 388,685.21/x
  3. Step 3: Cross multiply
    1,299,431.30x = 1,949,425.05 × 388,685.21
  4. Step 4: Simplify right side
    1,299,431.30x = 757,712,684,938.51
  5. Step 5: Solve for x
    x = 757,712,684,938.51/1,299,431.30
  6. Step 6: Final answer
    x = 583,111.00

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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.