Home / 390,628,924.22-588,281,763.31-355,761,080.21

Finding the Fourth Proportional to 390,628,924.22, 588,281,763.31 and 355,761,080.21

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Solution

The fourth proportional to 390,628,924.22, 588,281,763.31 and 355,761,080.21 is: 535,771,271.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,628,924.22 : 588,281,763.31 = 355,761,080.21 : x
  2. Step 2: Convert to fraction form
    390,628,924.22/588,281,763.31 = 355,761,080.21/x
  3. Step 3: Cross multiply
    390,628,924.22x = 588,281,763.31 × 355,761,080.21
  4. Step 4: Simplify right side
    390,628,924.22x = 209,287,755,583,009,120
  5. Step 5: Solve for x
    x = 209,287,755,583,009,120/390,628,924.22
  6. Step 6: Final answer
    x = 535,771,271.93

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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.