Home / 662,898.75-913,997.70-515,766.39

Finding the Fourth Proportional to 662,898.75, 913,997.70 and 515,766.39

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Solution

The fourth proportional to 662,898.75, 913,997.70 and 515,766.39 is: 711,133.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,898.75 : 913,997.70 = 515,766.39 : x
  2. Step 2: Convert to fraction form
    662,898.75/913,997.70 = 515,766.39/x
  3. Step 3: Cross multiply
    662,898.75x = 913,997.70 × 515,766.39
  4. Step 4: Simplify right side
    662,898.75x = 471,409,287,048.48
  5. Step 5: Solve for x
    x = 471,409,287,048.48/662,898.75
  6. Step 6: Final answer
    x = 711,133.17

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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.