Home / 861,945.55-1,189,484.80-499,579.60

Finding the Fourth Proportional to 861,945.55, 1,189,484.80 and 499,579.60

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Solution

The fourth proportional to 861,945.55, 1,189,484.80 and 499,579.60 is: 689,419.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,945.55 : 1,189,484.80 = 499,579.60 : x
  2. Step 2: Convert to fraction form
    861,945.55/1,189,484.80 = 499,579.60/x
  3. Step 3: Cross multiply
    861,945.55x = 1,189,484.80 × 499,579.60
  4. Step 4: Simplify right side
    861,945.55x = 594,242,340,590.08
  5. Step 5: Solve for x
    x = 594,242,340,590.08/861,945.55
  6. Step 6: Final answer
    x = 689,419.81

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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.