Home / 920,398.14-1,380,655.53-289,336.86

Finding the Fourth Proportional to 920,398.14, 1,380,655.53 and 289,336.86

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Solution

The fourth proportional to 920,398.14, 1,380,655.53 and 289,336.86 is: 434,023.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,398.14 : 1,380,655.53 = 289,336.86 : x
  2. Step 2: Convert to fraction form
    920,398.14/1,380,655.53 = 289,336.86/x
  3. Step 3: Cross multiply
    920,398.14x = 1,380,655.53 × 289,336.86
  4. Step 4: Simplify right side
    920,398.14x = 399,474,535,791.84
  5. Step 5: Solve for x
    x = 399,474,535,791.84/920,398.14
  6. Step 6: Final answer
    x = 434,023.62

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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.