Home / 690,566.40-1,035,997.44-391,188.48

Finding the Fourth Proportional to 690,566.40, 1,035,997.44 and 391,188.48

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Solution

The fourth proportional to 690,566.40, 1,035,997.44 and 391,188.48 is: 586,866.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,566.40 : 1,035,997.44 = 391,188.48 : x
  2. Step 2: Convert to fraction form
    690,566.40/1,035,997.44 = 391,188.48/x
  3. Step 3: Cross multiply
    690,566.40x = 1,035,997.44 × 391,188.48
  4. Step 4: Simplify right side
    690,566.40x = 405,270,263,837.49
  5. Step 5: Solve for x
    x = 405,270,263,837.49/690,566.40
  6. Step 6: Final answer
    x = 586,866.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.