Home / 1,200,430.80-1,656,816.12-771,247.44

Finding the Fourth Proportional to 1,200,430.80, 1,656,816.12 and 771,247.44

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Solution

The fourth proportional to 1,200,430.80, 1,656,816.12 and 771,247.44 is: 1,064,463.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,430.80 : 1,656,816.12 = 771,247.44 : x
  2. Step 2: Convert to fraction form
    1,200,430.80/1,656,816.12 = 771,247.44/x
  3. Step 3: Cross multiply
    1,200,430.80x = 1,656,816.12 × 771,247.44
  4. Step 4: Simplify right side
    1,200,430.80x = 1,277,815,191,100.73
  5. Step 5: Solve for x
    x = 1,277,815,191,100.73/1,200,430.80
  6. Step 6: Final answer
    x = 1,064,463.85

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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.