Home / 521,520,768,085.20-782,281,152,127.80-437,837,942,461.20

Finding the Fourth Proportional to 521,520,768,085.20, 782,281,152,127.80 and 437,837,942,461.20

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Solution

The fourth proportional to 521,520,768,085.20, 782,281,152,127.80 and 437,837,942,461.20 is: 656,756,913,691.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,768,085.20 : 782,281,152,127.80 = 437,837,942,461.20 : x
  2. Step 2: Convert to fraction form
    521,520,768,085.20/782,281,152,127.80 = 437,837,942,461.20/x
  3. Step 3: Cross multiply
    521,520,768,085.20x = 782,281,152,127.80 × 437,837,942,461.20
  4. Step 4: Simplify right side
    521,520,768,085.20x = 342,512,370,073,812,961,591,296
  5. Step 5: Solve for x
    x = 342,512,370,073,812,961,591,296/521,520,768,085.20
  6. Step 6: Final answer
    x = 656,756,913,691.80

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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.