Home / 521,520,800,428.80-782,281,200,643.20-149,291,020,972.80

Finding the Fourth Proportional to 521,520,800,428.80, 782,281,200,643.20 and 149,291,020,972.80

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Solution

The fourth proportional to 521,520,800,428.80, 782,281,200,643.20 and 149,291,020,972.80 is: 223,936,531,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,800,428.80 : 782,281,200,643.20 = 149,291,020,972.80 : x
  2. Step 2: Convert to fraction form
    521,520,800,428.80/782,281,200,643.20 = 149,291,020,972.80/x
  3. Step 3: Cross multiply
    521,520,800,428.80x = 782,281,200,643.20 × 149,291,020,972.80
  4. Step 4: Simplify right side
    521,520,800,428.80x = 116,787,559,131,851,111,006,208
  5. Step 5: Solve for x
    x = 116,787,559,131,851,111,006,208/521,520,800,428.80
  6. Step 6: Final answer
    x = 223,936,531,459.20

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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.