Home / 657,673,724.42-986,215,735.25-391,904,779.60

Finding the Fourth Proportional to 657,673,724.42, 986,215,735.25 and 391,904,779.60

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Solution

The fourth proportional to 657,673,724.42, 986,215,735.25 and 391,904,779.60 is: 587,681,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,673,724.42 : 986,215,735.25 = 391,904,779.60 : x
  2. Step 2: Convert to fraction form
    657,673,724.42/986,215,735.25 = 391,904,779.60/x
  3. Step 3: Cross multiply
    657,673,724.42x = 986,215,735.25 × 391,904,779.60
  4. Step 4: Simplify right side
    657,673,724.42x = 386,502,660,361,203,200
  5. Step 5: Solve for x
    x = 386,502,660,361,203,200/657,673,724.42
  6. Step 6: Final answer
    x = 587,681,468.80

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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.