Home / 664,440,939.60-996,661,409.40-319,311,344.40

Finding the Fourth Proportional to 664,440,939.60, 996,661,409.40 and 319,311,344.40

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Solution

The fourth proportional to 664,440,939.60, 996,661,409.40 and 319,311,344.40 is: 478,967,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,440,939.60 : 996,661,409.40 = 319,311,344.40 : x
  2. Step 2: Convert to fraction form
    664,440,939.60/996,661,409.40 = 319,311,344.40/x
  3. Step 3: Cross multiply
    664,440,939.60x = 996,661,409.40 × 319,311,344.40
  4. Step 4: Simplify right side
    664,440,939.60x = 318,245,294,547,112,768
  5. Step 5: Solve for x
    x = 318,245,294,547,112,768/664,440,939.60
  6. Step 6: Final answer
    x = 478,967,016.60

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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.