Home / 1,425,343.86-1,966,904.64-780,766.92

Finding the Fourth Proportional to 1,425,343.86, 1,966,904.64 and 780,766.92

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Solution

The fourth proportional to 1,425,343.86, 1,966,904.64 and 780,766.92 is: 1,077,420.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,343.86 : 1,966,904.64 = 780,766.92 : x
  2. Step 2: Convert to fraction form
    1,425,343.86/1,966,904.64 = 780,766.92/x
  3. Step 3: Cross multiply
    1,425,343.86x = 1,966,904.64 × 780,766.92
  4. Step 4: Simplify right side
    1,425,343.86x = 1,535,694,077,706.51
  5. Step 5: Solve for x
    x = 1,535,694,077,706.51/1,425,343.86
  6. Step 6: Final answer
    x = 1,077,420.07

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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.