Home / 839,814,004.30-1,259,721,006.45-355,139,812.30

Finding the Fourth Proportional to 839,814,004.30, 1,259,721,006.45 and 355,139,812.30

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Solution

The fourth proportional to 839,814,004.30, 1,259,721,006.45 and 355,139,812.30 is: 532,709,718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,814,004.30 : 1,259,721,006.45 = 355,139,812.30 : x
  2. Step 2: Convert to fraction form
    839,814,004.30/1,259,721,006.45 = 355,139,812.30/x
  3. Step 3: Cross multiply
    839,814,004.30x = 1,259,721,006.45 × 355,139,812.30
  4. Step 4: Simplify right side
    839,814,004.30x = 447,377,081,781,020,096
  5. Step 5: Solve for x
    x = 447,377,081,781,020,096/839,814,004.30
  6. Step 6: Final answer
    x = 532,709,718.45

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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.