Home / 698,782.28-964,297.20-392,871.60

Finding the Fourth Proportional to 698,782.28, 964,297.20 and 392,871.60

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Solution

The fourth proportional to 698,782.28, 964,297.20 and 392,871.60 is: 542,150.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,782.28 : 964,297.20 = 392,871.60 : x
  2. Step 2: Convert to fraction form
    698,782.28/964,297.20 = 392,871.60/x
  3. Step 3: Cross multiply
    698,782.28x = 964,297.20 × 392,871.60
  4. Step 4: Simplify right side
    698,782.28x = 378,844,985,312.79
  5. Step 5: Solve for x
    x = 378,844,985,312.79/698,782.28
  6. Step 6: Final answer
    x = 542,150.25

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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.