Home / 861,618.72-1,189,193.28-499,042.50

Finding the Fourth Proportional to 861,618.72, 1,189,193.28 and 499,042.50

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Solution

The fourth proportional to 861,618.72, 1,189,193.28 and 499,042.50 is: 688,771.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,618.72 : 1,189,193.28 = 499,042.50 : x
  2. Step 2: Convert to fraction form
    861,618.72/1,189,193.28 = 499,042.50/x
  3. Step 3: Cross multiply
    861,618.72x = 1,189,193.28 × 499,042.50
  4. Step 4: Simplify right side
    861,618.72x = 593,457,987,434.40
  5. Step 5: Solve for x
    x = 593,457,987,434.40/861,618.72
  6. Step 6: Final answer
    x = 688,771.00

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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.