Home / 1,316,040.80-1,816,142.10-712,428.80

Finding the Fourth Proportional to 1,316,040.80, 1,816,142.10 and 712,428.80

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Solution

The fourth proportional to 1,316,040.80, 1,816,142.10 and 712,428.80 is: 983,154.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,040.80 : 1,816,142.10 = 712,428.80 : x
  2. Step 2: Convert to fraction form
    1,316,040.80/1,816,142.10 = 712,428.80/x
  3. Step 3: Cross multiply
    1,316,040.80x = 1,816,142.10 × 712,428.80
  4. Step 4: Simplify right side
    1,316,040.80x = 1,293,871,936,932.48
  5. Step 5: Solve for x
    x = 1,293,871,936,932.48/1,316,040.80
  6. Step 6: Final answer
    x = 983,154.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.