Home / 664,440,025.60-996,660,038.40-319,310,430.40

Finding the Fourth Proportional to 664,440,025.60, 996,660,038.40 and 319,310,430.40

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Solution

The fourth proportional to 664,440,025.60, 996,660,038.40 and 319,310,430.40 is: 478,965,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,440,025.60 : 996,660,038.40 = 319,310,430.40 : x
  2. Step 2: Convert to fraction form
    664,440,025.60/996,660,038.40 = 319,310,430.40/x
  3. Step 3: Cross multiply
    664,440,025.60x = 996,660,038.40 × 319,310,430.40
  4. Step 4: Simplify right side
    664,440,025.60x = 318,243,945,823,984,512
  5. Step 5: Solve for x
    x = 318,243,945,823,984,512/664,440,025.60
  6. Step 6: Final answer
    x = 478,965,645.60

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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.