Home / 390,629,292.38-588,282,319.31-355,761,448.37

Finding the Fourth Proportional to 390,629,292.38, 588,282,319.31 and 355,761,448.37

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Solution

The fourth proportional to 390,629,292.38, 588,282,319.31 and 355,761,448.37 is: 535,771,827.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,629,292.38 : 588,282,319.31 = 355,761,448.37 : x
  2. Step 2: Convert to fraction form
    390,629,292.38/588,282,319.31 = 355,761,448.37/x
  3. Step 3: Cross multiply
    390,629,292.38x = 588,282,319.31 × 355,761,448.37
  4. Step 4: Simplify right side
    390,629,292.38x = 209,288,169,963,468,192
  5. Step 5: Solve for x
    x = 209,288,169,963,468,192/390,629,292.38
  6. Step 6: Final answer
    x = 535,771,827.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.