Home / 685,360.20-947,098.26-515,299.08

Finding the Fourth Proportional to 685,360.20, 947,098.26 and 515,299.08

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Solution

The fourth proportional to 685,360.20, 947,098.26 and 515,299.08 is: 712,091.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,360.20 : 947,098.26 = 515,299.08 : x
  2. Step 2: Convert to fraction form
    685,360.20/947,098.26 = 515,299.08/x
  3. Step 3: Cross multiply
    685,360.20x = 947,098.26 × 515,299.08
  4. Step 4: Simplify right side
    685,360.20x = 488,038,862,047.60
  5. Step 5: Solve for x
    x = 488,038,862,047.60/685,360.20
  6. Step 6: Final answer
    x = 712,091.05

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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.