Home / 808,381,246.40-1,212,571,869.60-290,828,571.20

Finding the Fourth Proportional to 808,381,246.40, 1,212,571,869.60 and 290,828,571.20

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Solution

The fourth proportional to 808,381,246.40, 1,212,571,869.60 and 290,828,571.20 is: 436,242,856.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,381,246.40 : 1,212,571,869.60 = 290,828,571.20 : x
  2. Step 2: Convert to fraction form
    808,381,246.40/1,212,571,869.60 = 290,828,571.20/x
  3. Step 3: Cross multiply
    808,381,246.40x = 1,212,571,869.60 × 290,828,571.20
  4. Step 4: Simplify right side
    808,381,246.40x = 352,650,544,313,080,704
  5. Step 5: Solve for x
    x = 352,650,544,313,080,704/808,381,246.40
  6. Step 6: Final answer
    x = 436,242,856.80

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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.