Home / 391,459,866.27-539,713,134.90-320,634,560.18

Finding the Fourth Proportional to 391,459,866.27, 539,713,134.90 and 320,634,560.18

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Solution

The fourth proportional to 391,459,866.27, 539,713,134.90 and 320,634,560.18 is: 442,064,943.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,459,866.27 : 539,713,134.90 = 320,634,560.18 : x
  2. Step 2: Convert to fraction form
    391,459,866.27/539,713,134.90 = 320,634,560.18/x
  3. Step 3: Cross multiply
    391,459,866.27x = 539,713,134.90 × 320,634,560.18
  4. Step 4: Simplify right side
    391,459,866.27x = 173,050,683,629,331,936
  5. Step 5: Solve for x
    x = 173,050,683,629,331,936/391,459,866.27
  6. Step 6: Final answer
    x = 442,064,943.41

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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.