Home / 638,479,742.30-881,101,654.66-345,124,310.30

Finding the Fourth Proportional to 638,479,742.30, 881,101,654.66 and 345,124,310.30

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Solution

The fourth proportional to 638,479,742.30, 881,101,654.66 and 345,124,310.30 is: 476,271,337.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,479,742.30 : 881,101,654.66 = 345,124,310.30 : x
  2. Step 2: Convert to fraction form
    638,479,742.30/881,101,654.66 = 345,124,310.30/x
  3. Step 3: Cross multiply
    638,479,742.30x = 881,101,654.66 × 345,124,310.30
  4. Step 4: Simplify right side
    638,479,742.30x = 304,089,600,868,721,280
  5. Step 5: Solve for x
    x = 304,089,600,868,721,280/638,479,742.30
  6. Step 6: Final answer
    x = 476,271,337.56

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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.