Home / 1,398,077.71-1,929,328.90-786,230.28

Finding the Fourth Proportional to 1,398,077.71, 1,929,328.90 and 786,230.28

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Solution

The fourth proportional to 1,398,077.71, 1,929,328.90 and 786,230.28 is: 1,084,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,077.71 : 1,929,328.90 = 786,230.28 : x
  2. Step 2: Convert to fraction form
    1,398,077.71/1,929,328.90 = 786,230.28/x
  3. Step 3: Cross multiply
    1,398,077.71x = 1,929,328.90 × 786,230.28
  4. Step 4: Simplify right side
    1,398,077.71x = 1,516,896,801,259.09
  5. Step 5: Solve for x
    x = 1,516,896,801,259.09/1,398,077.71
  6. Step 6: Final answer
    x = 1,084,987.47

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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.