Home / 391,459,867.77-539,713,136.97-320,634,561.68

Finding the Fourth Proportional to 391,459,867.77, 539,713,136.97 and 320,634,561.68

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Solution

The fourth proportional to 391,459,867.77, 539,713,136.97 and 320,634,561.68 is: 442,064,945.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,459,867.77 : 539,713,136.97 = 320,634,561.68 : x
  2. Step 2: Convert to fraction form
    391,459,867.77/539,713,136.97 = 320,634,561.68/x
  3. Step 3: Cross multiply
    391,459,867.77x = 539,713,136.97 × 320,634,561.68
  4. Step 4: Simplify right side
    391,459,867.77x = 173,050,685,102,615,200
  5. Step 5: Solve for x
    x = 173,050,685,102,615,200/391,459,867.77
  6. Step 6: Final answer
    x = 442,064,945.48

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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.