Home / 521,448,125.70-782,172,188.55-262,563,312.90

Finding the Fourth Proportional to 521,448,125.70, 782,172,188.55 and 262,563,312.90

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Solution

The fourth proportional to 521,448,125.70, 782,172,188.55 and 262,563,312.90 is: 393,844,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,448,125.70 : 782,172,188.55 = 262,563,312.90 : x
  2. Step 2: Convert to fraction form
    521,448,125.70/782,172,188.55 = 262,563,312.90/x
  3. Step 3: Cross multiply
    521,448,125.70x = 782,172,188.55 × 262,563,312.90
  4. Step 4: Simplify right side
    521,448,125.70x = 205,369,721,083,931,424
  5. Step 5: Solve for x
    x = 205,369,721,083,931,424/521,448,125.70
  6. Step 6: Final answer
    x = 393,844,969.35

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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.