Home / 770,129.91-1,062,453.85-515,563.11

Finding the Fourth Proportional to 770,129.91, 1,062,453.85 and 515,563.11

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Solution

The fourth proportional to 770,129.91, 1,062,453.85 and 515,563.11 is: 711,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,129.91 : 1,062,453.85 = 515,563.11 : x
  2. Step 2: Convert to fraction form
    770,129.91/1,062,453.85 = 515,563.11/x
  3. Step 3: Cross multiply
    770,129.91x = 1,062,453.85 × 515,563.11
  4. Step 4: Simplify right side
    770,129.91x = 547,762,009,848.57
  5. Step 5: Solve for x
    x = 547,762,009,848.57/770,129.91
  6. Step 6: Final answer
    x = 711,259.23

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Double scale
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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.