Home / 389,905.83-583,528.10-326,797.20

Finding the Fourth Proportional to 389,905.83, 583,528.10 and 326,797.20

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Solution

The fourth proportional to 389,905.83, 583,528.10 and 326,797.20 is: 489,080.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,905.83 : 583,528.10 = 326,797.20 : x
  2. Step 2: Convert to fraction form
    389,905.83/583,528.10 = 326,797.20/x
  3. Step 3: Cross multiply
    389,905.83x = 583,528.10 × 326,797.20
  4. Step 4: Simplify right side
    389,905.83x = 190,695,347,567.33
  5. Step 5: Solve for x
    x = 190,695,347,567.33/389,905.83
  6. Step 6: Final answer
    x = 489,080.52

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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.