Home / 528,155,078.40-792,267,609.60-139,972,492.80

Finding the Fourth Proportional to 528,155,078.40, 792,267,609.60 and 139,972,492.80

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Solution

The fourth proportional to 528,155,078.40, 792,267,609.60 and 139,972,492.80 is: 209,968,012.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,155,078.40 : 792,267,609.60 = 139,972,492.80 : x
  2. Step 2: Convert to fraction form
    528,155,078.40/792,267,609.60 = 139,972,492.80/x
  3. Step 3: Cross multiply
    528,155,078.40x = 792,267,609.60 × 139,972,492.80
  4. Step 4: Simplify right side
    528,155,078.40x = 110,895,672,280,409,216
  5. Step 5: Solve for x
    x = 110,895,672,280,409,216/528,155,078.40
  6. Step 6: Final answer
    x = 209,968,012.84

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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.