Home / 521,621,994.30-782,432,991.45-368,566,986.30

Finding the Fourth Proportional to 521,621,994.30, 782,432,991.45 and 368,566,986.30

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Solution

The fourth proportional to 521,621,994.30, 782,432,991.45 and 368,566,986.30 is: 552,850,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,621,994.30 : 782,432,991.45 = 368,566,986.30 : x
  2. Step 2: Convert to fraction form
    521,621,994.30/782,432,991.45 = 368,566,986.30/x
  3. Step 3: Cross multiply
    521,621,994.30x = 782,432,991.45 × 368,566,986.30
  4. Step 4: Simplify right side
    521,621,994.30x = 288,378,969,640,420,224
  5. Step 5: Solve for x
    x = 288,378,969,640,420,224/521,621,994.30
  6. Step 6: Final answer
    x = 552,850,479.45

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Double scale
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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.