Home / 1,428,420.69-1,971,214.99-783,851.65

Finding the Fourth Proportional to 1,428,420.69, 1,971,214.99 and 783,851.65

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Solution

The fourth proportional to 1,428,420.69, 1,971,214.99 and 783,851.65 is: 1,081,712.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,420.69 : 1,971,214.99 = 783,851.65 : x
  2. Step 2: Convert to fraction form
    1,428,420.69/1,971,214.99 = 783,851.65/x
  3. Step 3: Cross multiply
    1,428,420.69x = 1,971,214.99 × 783,851.65
  4. Step 4: Simplify right side
    1,428,420.69x = 1,545,140,115,528.57
  5. Step 5: Solve for x
    x = 1,545,140,115,528.57/1,428,420.69
  6. Step 6: Final answer
    x = 1,081,712.22

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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.