Home / 1,239,622.80-1,859,434.20-861,709.20

Finding the Fourth Proportional to 1,239,622.80, 1,859,434.20 and 861,709.20

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Solution

The fourth proportional to 1,239,622.80, 1,859,434.20 and 861,709.20 is: 1,292,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,622.80 : 1,859,434.20 = 861,709.20 : x
  2. Step 2: Convert to fraction form
    1,239,622.80/1,859,434.20 = 861,709.20/x
  3. Step 3: Cross multiply
    1,239,622.80x = 1,859,434.20 × 861,709.20
  4. Step 4: Simplify right side
    1,239,622.80x = 1,602,291,556,934.64
  5. Step 5: Solve for x
    x = 1,602,291,556,934.64/1,239,622.80
  6. Step 6: Final answer
    x = 1,292,563.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.