Home / 1,353,420.32-1,867,680.72-780,553.76

Finding the Fourth Proportional to 1,353,420.32, 1,867,680.72 and 780,553.76

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Solution

The fourth proportional to 1,353,420.32, 1,867,680.72 and 780,553.76 is: 1,077,141.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,420.32 : 1,867,680.72 = 780,553.76 : x
  2. Step 2: Convert to fraction form
    1,353,420.32/1,867,680.72 = 780,553.76/x
  3. Step 3: Cross multiply
    1,353,420.32x = 1,867,680.72 × 780,553.76
  4. Step 4: Simplify right side
    1,353,420.32x = 1,457,825,208,475.51
  5. Step 5: Solve for x
    x = 1,457,825,208,475.51/1,353,420.32
  6. Step 6: Final answer
    x = 1,077,141.51

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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.