Home / 1,277,981.28-1,762,832.70-818,941.32

Finding the Fourth Proportional to 1,277,981.28, 1,762,832.70 and 818,941.32

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Solution

The fourth proportional to 1,277,981.28, 1,762,832.70 and 818,941.32 is: 1,129,638.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,981.28 : 1,762,832.70 = 818,941.32 : x
  2. Step 2: Convert to fraction form
    1,277,981.28/1,762,832.70 = 818,941.32/x
  3. Step 3: Cross multiply
    1,277,981.28x = 1,762,832.70 × 818,941.32
  4. Step 4: Simplify right side
    1,277,981.28x = 1,443,656,538,277.16
  5. Step 5: Solve for x
    x = 1,443,656,538,277.16/1,277,981.28
  6. Step 6: Final answer
    x = 1,129,638.25

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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.