Home / 1,292,149.35-1,782,687.83-1,290,156.48

Finding the Fourth Proportional to 1,292,149.35, 1,782,687.83 and 1,290,156.48

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Solution

The fourth proportional to 1,292,149.35, 1,782,687.83 and 1,290,156.48 is: 1,779,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,149.35 : 1,782,687.83 = 1,290,156.48 : x
  2. Step 2: Convert to fraction form
    1,292,149.35/1,782,687.83 = 1,290,156.48/x
  3. Step 3: Cross multiply
    1,292,149.35x = 1,782,687.83 × 1,290,156.48
  4. Step 4: Simplify right side
    1,292,149.35x = 2,299,946,249,240.86
  5. Step 5: Solve for x
    x = 2,299,946,249,240.86/1,292,149.35
  6. Step 6: Final answer
    x = 1,779,938.40

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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.