Home / 521,520,768,083.70-782,281,152,125.55-437,837,942,459.70

Finding the Fourth Proportional to 521,520,768,083.70, 782,281,152,125.55 and 437,837,942,459.70

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Solution

The fourth proportional to 521,520,768,083.70, 782,281,152,125.55 and 437,837,942,459.70 is: 656,756,913,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,768,083.70 : 782,281,152,125.55 = 437,837,942,459.70 : x
  2. Step 2: Convert to fraction form
    521,520,768,083.70/782,281,152,125.55 = 437,837,942,459.70/x
  3. Step 3: Cross multiply
    521,520,768,083.70x = 782,281,152,125.55 × 437,837,942,459.70
  4. Step 4: Simplify right side
    521,520,768,083.70x = 342,512,370,071,654,404,980,736
  5. Step 5: Solve for x
    x = 342,512,370,071,654,404,980,736/521,520,768,083.70
  6. Step 6: Final answer
    x = 656,756,913,689.55

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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.