Home / 485,215,509.33-727,082,652.85-288,090,743.65

Finding the Fourth Proportional to 485,215,509.33, 727,082,652.85 and 288,090,743.65

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Solution

The fourth proportional to 485,215,509.33, 727,082,652.85 and 288,090,743.65 is: 431,696,386.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,215,509.33 : 727,082,652.85 = 288,090,743.65 : x
  2. Step 2: Convert to fraction form
    485,215,509.33/727,082,652.85 = 288,090,743.65/x
  3. Step 3: Cross multiply
    485,215,509.33x = 727,082,652.85 × 288,090,743.65
  4. Step 4: Simplify right side
    485,215,509.33x = 209,465,782,152,033,344
  5. Step 5: Solve for x
    x = 209,465,782,152,033,344/485,215,509.33
  6. Step 6: Final answer
    x = 431,696,386.71

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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.