Home / 522,066,288.69-720,437,101.45-287,117,034.53

Finding the Fourth Proportional to 522,066,288.69, 720,437,101.45 and 287,117,034.53

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Solution

The fourth proportional to 522,066,288.69, 720,437,101.45 and 287,117,034.53 is: 396,213,600.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,066,288.69 : 720,437,101.45 = 287,117,034.53 : x
  2. Step 2: Convert to fraction form
    522,066,288.69/720,437,101.45 = 287,117,034.53/x
  3. Step 3: Cross multiply
    522,066,288.69x = 720,437,101.45 × 287,117,034.53
  4. Step 4: Simplify right side
    522,066,288.69x = 206,849,764,129,392,768
  5. Step 5: Solve for x
    x = 206,849,764,129,392,768/522,066,288.69
  6. Step 6: Final answer
    x = 396,213,600.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.