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Finding the Fourth Proportional to 613,615.80, 919,559.70 and 487,471.80

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Solution

The fourth proportional to 613,615.80, 919,559.70 and 487,471.80 is: 730,521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,615.80 : 919,559.70 = 487,471.80 : x
  2. Step 2: Convert to fraction form
    613,615.80/919,559.70 = 487,471.80/x
  3. Step 3: Cross multiply
    613,615.80x = 919,559.70 × 487,471.80
  4. Step 4: Simplify right side
    613,615.80x = 448,259,422,166.46
  5. Step 5: Solve for x
    x = 448,259,422,166.46/613,615.80
  6. Step 6: Final answer
    x = 730,521.32

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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.