Home / 431,362,913.40-647,044,370.10-329,326,241.40

Finding the Fourth Proportional to 431,362,913.40, 647,044,370.10 and 329,326,241.40

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Solution

The fourth proportional to 431,362,913.40, 647,044,370.10 and 329,326,241.40 is: 493,989,362.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,362,913.40 : 647,044,370.10 = 329,326,241.40 : x
  2. Step 2: Convert to fraction form
    431,362,913.40/647,044,370.10 = 329,326,241.40/x
  3. Step 3: Cross multiply
    431,362,913.40x = 647,044,370.10 × 329,326,241.40
  4. Step 4: Simplify right side
    431,362,913.40x = 213,088,690,424,063,520
  5. Step 5: Solve for x
    x = 213,088,690,424,063,520/431,362,913.40
  6. Step 6: Final answer
    x = 493,989,362.10

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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.