Home / 992,340.80-1,488,050.40-431,086.40

Finding the Fourth Proportional to 992,340.80, 1,488,050.40 and 431,086.40

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Solution

The fourth proportional to 992,340.80, 1,488,050.40 and 431,086.40 is: 646,429.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,340.80 : 1,488,050.40 = 431,086.40 : x
  2. Step 2: Convert to fraction form
    992,340.80/1,488,050.40 = 431,086.40/x
  3. Step 3: Cross multiply
    992,340.80x = 1,488,050.40 × 431,086.40
  4. Step 4: Simplify right side
    992,340.80x = 641,478,289,954.56
  5. Step 5: Solve for x
    x = 641,478,289,954.56/992,340.80
  6. Step 6: Final answer
    x = 646,429.42

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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.