Home / 390,629,290.88-588,282,317.04-355,761,446.87

Finding the Fourth Proportional to 390,629,290.88, 588,282,317.04 and 355,761,446.87

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Solution

The fourth proportional to 390,629,290.88, 588,282,317.04 and 355,761,446.87 is: 535,771,825.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,629,290.88 : 588,282,317.04 = 355,761,446.87 : x
  2. Step 2: Convert to fraction form
    390,629,290.88/588,282,317.04 = 355,761,446.87/x
  3. Step 3: Cross multiply
    390,629,290.88x = 588,282,317.04 × 355,761,446.87
  4. Step 4: Simplify right side
    390,629,290.88x = 209,288,168,275,245,024
  5. Step 5: Solve for x
    x = 209,288,168,275,245,024/390,629,290.88
  6. Step 6: Final answer
    x = 535,771,825.52

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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.