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Finding the Fourth Proportional to 613,675.80, 919,649.70 and 487,531.80

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Solution

The fourth proportional to 613,675.80, 919,649.70 and 487,531.80 is: 730,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,675.80 : 919,649.70 = 487,531.80 : x
  2. Step 2: Convert to fraction form
    613,675.80/919,649.70 = 487,531.80/x
  3. Step 3: Cross multiply
    613,675.80x = 919,649.70 × 487,531.80
  4. Step 4: Simplify right side
    613,675.80x = 448,358,473,610.46
  5. Step 5: Solve for x
    x = 448,358,473,610.46/613,675.80
  6. Step 6: Final answer
    x = 730,611.30

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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.