Home / 431,367,428.40-647,051,142.60-323,872,004.40

Finding the Fourth Proportional to 431,367,428.40, 647,051,142.60 and 323,872,004.40

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Solution

The fourth proportional to 431,367,428.40, 647,051,142.60 and 323,872,004.40 is: 485,808,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,367,428.40 : 647,051,142.60 = 323,872,004.40 : x
  2. Step 2: Convert to fraction form
    431,367,428.40/647,051,142.60 = 323,872,004.40/x
  3. Step 3: Cross multiply
    431,367,428.40x = 647,051,142.60 × 323,872,004.40
  4. Step 4: Simplify right side
    431,367,428.40x = 209,561,750,503,172,224
  5. Step 5: Solve for x
    x = 209,561,750,503,172,224/431,367,428.40
  6. Step 6: Final answer
    x = 485,808,006.60

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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.