Home / 478,180.38-659,890.83-287,197.02

Finding the Fourth Proportional to 478,180.38, 659,890.83 and 287,197.02

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Solution

The fourth proportional to 478,180.38, 659,890.83 and 287,197.02 is: 396,333.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,180.38 : 659,890.83 = 287,197.02 : x
  2. Step 2: Convert to fraction form
    478,180.38/659,890.83 = 287,197.02/x
  3. Step 3: Cross multiply
    478,180.38x = 659,890.83 × 287,197.02
  4. Step 4: Simplify right side
    478,180.38x = 189,518,679,901.33
  5. Step 5: Solve for x
    x = 189,518,679,901.33/478,180.38
  6. Step 6: Final answer
    x = 396,333.03

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1.5x scale

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.