Home / 418,928,140.80-628,675,646.40-188,778,758.40

Finding the Fourth Proportional to 418,928,140.80, 628,675,646.40 and 188,778,758.40

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Solution

The fourth proportional to 418,928,140.80, 628,675,646.40 and 188,778,758.40 is: 283,295,860.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,928,140.80 : 628,675,646.40 = 188,778,758.40 : x
  2. Step 2: Convert to fraction form
    418,928,140.80/628,675,646.40 = 188,778,758.40/x
  3. Step 3: Cross multiply
    418,928,140.80x = 628,675,646.40 × 188,778,758.40
  4. Step 4: Simplify right side
    418,928,140.80x = 118,680,607,963,709,424
  5. Step 5: Solve for x
    x = 118,680,607,963,709,424/418,928,140.80
  6. Step 6: Final answer
    x = 283,295,860.09

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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.