Home / 819,220,139.81-1,228,831,392.32-334,545,947.81

Finding the Fourth Proportional to 819,220,139.81, 1,228,831,392.32 and 334,545,947.81

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Solution

The fourth proportional to 819,220,139.81, 1,228,831,392.32 and 334,545,947.81 is: 501,819,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,220,139.81 : 1,228,831,392.32 = 334,545,947.81 : x
  2. Step 2: Convert to fraction form
    819,220,139.81/1,228,831,392.32 = 334,545,947.81/x
  3. Step 3: Cross multiply
    819,220,139.81x = 1,228,831,392.32 × 334,545,947.81
  4. Step 4: Simplify right side
    819,220,139.81x = 411,100,562,842,376,320
  5. Step 5: Solve for x
    x = 411,100,562,842,376,320/819,220,139.81
  6. Step 6: Final answer
    x = 501,819,404.66

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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.