Home / 457,916,432.64-631,867,264.32-309,560,357.76

Finding the Fourth Proportional to 457,916,432.64, 631,867,264.32 and 309,560,357.76

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Solution

The fourth proportional to 457,916,432.64, 631,867,264.32 and 309,560,357.76 is: 427,154,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,916,432.64 : 631,867,264.32 = 309,560,357.76 : x
  2. Step 2: Convert to fraction form
    457,916,432.64/631,867,264.32 = 309,560,357.76/x
  3. Step 3: Cross multiply
    457,916,432.64x = 631,867,264.32 × 309,560,357.76
  4. Step 4: Simplify right side
    457,916,432.64x = 195,601,056,399,731,680
  5. Step 5: Solve for x
    x = 195,601,056,399,731,680/457,916,432.64
  6. Step 6: Final answer
    x = 427,154,481.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.