Home / 915,942,831.03-1,374,495,356.97-391,315,885.53

Finding the Fourth Proportional to 915,942,831.03, 1,374,495,356.97 and 391,315,885.53

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Solution

The fourth proportional to 915,942,831.03, 1,374,495,356.97 and 391,315,885.53 is: 587,222,094.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,942,831.03 : 1,374,495,356.97 = 391,315,885.53 : x
  2. Step 2: Convert to fraction form
    915,942,831.03/1,374,495,356.97 = 391,315,885.53/x
  3. Step 3: Cross multiply
    915,942,831.03x = 1,374,495,356.97 × 391,315,885.53
  4. Step 4: Simplify right side
    915,942,831.03x = 537,861,867,769,588,992
  5. Step 5: Solve for x
    x = 537,861,867,769,588,992/915,942,831.03
  6. Step 6: Final answer
    x = 587,222,094.60

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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.