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Finding the Fourth Proportional to 638,842,022.58, 881,604,647.82 and 345,486,590.58

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Solution

The fourth proportional to 638,842,022.58, 881,604,647.82 and 345,486,590.58 is: 476,772,931.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,842,022.58 : 881,604,647.82 = 345,486,590.58 : x
  2. Step 2: Convert to fraction form
    638,842,022.58/881,604,647.82 = 345,486,590.58/x
  3. Step 3: Cross multiply
    638,842,022.58x = 881,604,647.82 × 345,486,590.58
  4. Step 4: Simplify right side
    638,842,022.58x = 304,582,584,014,813,440
  5. Step 5: Solve for x
    x = 304,582,584,014,813,440/638,842,022.58
  6. Step 6: Final answer
    x = 476,772,931.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.