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Finding the Fourth Proportional to 618,227,543.60, 927,341,315.40 and 331,573,079.60

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Solution

The fourth proportional to 618,227,543.60, 927,341,315.40 and 331,573,079.60 is: 497,359,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,227,543.60 : 927,341,315.40 = 331,573,079.60 : x
  2. Step 2: Convert to fraction form
    618,227,543.60/927,341,315.40 = 331,573,079.60/x
  3. Step 3: Cross multiply
    618,227,543.60x = 927,341,315.40 × 331,573,079.60
  4. Step 4: Simplify right side
    618,227,543.60x = 307,481,415,787,492,928
  5. Step 5: Solve for x
    x = 307,481,415,787,492,928/618,227,543.60
  6. Step 6: Final answer
    x = 497,359,619.40

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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.