Home / 698,639.43-964,224.50-392,741.00

Finding the Fourth Proportional to 698,639.43, 964,224.50 and 392,741.00

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Solution

The fourth proportional to 698,639.43, 964,224.50 and 392,741.00 is: 542,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,639.43 : 964,224.50 = 392,741.00 : x
  2. Step 2: Convert to fraction form
    698,639.43/964,224.50 = 392,741.00/x
  3. Step 3: Cross multiply
    698,639.43x = 964,224.50 × 392,741.00
  4. Step 4: Simplify right side
    698,639.43x = 378,690,487,569.67
  5. Step 5: Solve for x
    x = 378,690,487,569.67/698,639.43
  6. Step 6: Final answer
    x = 542,039.96

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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.