Home / 430,521.60-644,246.40-272,825.60

Finding the Fourth Proportional to 430,521.60, 644,246.40 and 272,825.60

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Solution

The fourth proportional to 430,521.60, 644,246.40 and 272,825.60 is: 408,265.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,521.60 : 644,246.40 = 272,825.60 : x
  2. Step 2: Convert to fraction form
    430,521.60/644,246.40 = 272,825.60/x
  3. Step 3: Cross multiply
    430,521.60x = 644,246.40 × 272,825.60
  4. Step 4: Simplify right side
    430,521.60x = 175,766,910,627.84
  5. Step 5: Solve for x
    x = 175,766,910,627.84/430,521.60
  6. Step 6: Final answer
    x = 408,265.02

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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.