Home / 992,340.30-1,488,049.65-431,085.90

Finding the Fourth Proportional to 992,340.30, 1,488,049.65 and 431,085.90

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Solution

The fourth proportional to 992,340.30, 1,488,049.65 and 431,085.90 is: 646,428.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,340.30 : 1,488,049.65 = 431,085.90 : x
  2. Step 2: Convert to fraction form
    992,340.30/1,488,049.65 = 431,085.90/x
  3. Step 3: Cross multiply
    992,340.30x = 1,488,049.65 × 431,085.90
  4. Step 4: Simplify right side
    992,340.30x = 641,477,222,614.94
  5. Step 5: Solve for x
    x = 641,477,222,614.94/992,340.30
  6. Step 6: Final answer
    x = 646,428.67

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1.5x scale

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.