Home / 1,128,535,825.79-1,692,133,128.83-429,079,161.23

Finding the Fourth Proportional to 1,128,535,825.79, 1,692,133,128.83 and 429,079,161.23

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Solution

The fourth proportional to 1,128,535,825.79, 1,692,133,128.83 and 429,079,161.23 is: 643,363,770.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,535,825.79 : 1,692,133,128.83 = 429,079,161.23 : x
  2. Step 2: Convert to fraction form
    1,128,535,825.79/1,692,133,128.83 = 429,079,161.23/x
  3. Step 3: Cross multiply
    1,128,535,825.79x = 1,692,133,128.83 × 429,079,161.23
  4. Step 4: Simplify right side
    1,128,535,825.79x = 726,059,063,613,175,040
  5. Step 5: Solve for x
    x = 726,059,063,613,175,040/1,128,535,825.79
  6. Step 6: Final answer
    x = 643,363,770.14

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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.