Home / 1,384,040.16-1,909,975.68-780,428.16

Finding the Fourth Proportional to 1,384,040.16, 1,909,975.68 and 780,428.16

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Solution

The fourth proportional to 1,384,040.16, 1,909,975.68 and 780,428.16 is: 1,076,991.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,040.16 : 1,909,975.68 = 780,428.16 : x
  2. Step 2: Convert to fraction form
    1,384,040.16/1,909,975.68 = 780,428.16/x
  3. Step 3: Cross multiply
    1,384,040.16x = 1,909,975.68 × 780,428.16
  4. Step 4: Simplify right side
    1,384,040.16x = 1,490,598,805,587.15
  5. Step 5: Solve for x
    x = 1,490,598,805,587.15/1,384,040.16
  6. Step 6: Final answer
    x = 1,076,991.01

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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.