Home / 1,428,551.36-1,971,415.80-784,013.12

Finding the Fourth Proportional to 1,428,551.36, 1,971,415.80 and 784,013.12

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Solution

The fourth proportional to 1,428,551.36, 1,971,415.80 and 784,013.12 is: 1,081,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,551.36 : 1,971,415.80 = 784,013.12 : x
  2. Step 2: Convert to fraction form
    1,428,551.36/1,971,415.80 = 784,013.12/x
  3. Step 3: Cross multiply
    1,428,551.36x = 1,971,415.80 × 784,013.12
  4. Step 4: Simplify right side
    1,428,551.36x = 1,545,615,852,175.30
  5. Step 5: Solve for x
    x = 1,545,615,852,175.30/1,428,551.36
  6. Step 6: Final answer
    x = 1,081,946.30

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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.