Home / 1,618,687.80-2,428,031.70-778,879.80

Finding the Fourth Proportional to 1,618,687.80, 2,428,031.70 and 778,879.80

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Solution

The fourth proportional to 1,618,687.80, 2,428,031.70 and 778,879.80 is: 1,168,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,687.80 : 2,428,031.70 = 778,879.80 : x
  2. Step 2: Convert to fraction form
    1,618,687.80/2,428,031.70 = 778,879.80/x
  3. Step 3: Cross multiply
    1,618,687.80x = 2,428,031.70 × 778,879.80
  4. Step 4: Simplify right side
    1,618,687.80x = 1,891,144,844,889.66
  5. Step 5: Solve for x
    x = 1,891,144,844,889.66/1,618,687.80
  6. Step 6: Final answer
    x = 1,168,319.70

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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.