Home / 1,426,242.96-1,968,230.70-781,649.28

Finding the Fourth Proportional to 1,426,242.96, 1,968,230.70 and 781,649.28

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Solution

The fourth proportional to 1,426,242.96, 1,968,230.70 and 781,649.28 is: 1,078,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,242.96 : 1,968,230.70 = 781,649.28 : x
  2. Step 2: Convert to fraction form
    1,426,242.96/1,968,230.70 = 781,649.28/x
  3. Step 3: Cross multiply
    1,426,242.96x = 1,968,230.70 × 781,649.28
  4. Step 4: Simplify right side
    1,426,242.96x = 1,538,466,109,528.90
  5. Step 5: Solve for x
    x = 1,538,466,109,528.90/1,426,242.96
  6. Step 6: Final answer
    x = 1,078,684.45

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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.