Home / 430,821.89-644,432.84-302,729.20

Finding the Fourth Proportional to 430,821.89, 644,432.84 and 302,729.20

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Solution

The fourth proportional to 430,821.89, 644,432.84 and 302,729.20 is: 452,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,821.89 : 644,432.84 = 302,729.20 : x
  2. Step 2: Convert to fraction form
    430,821.89/644,432.84 = 302,729.20/x
  3. Step 3: Cross multiply
    430,821.89x = 644,432.84 × 302,729.20
  4. Step 4: Simplify right side
    430,821.89x = 195,088,634,982.20
  5. Step 5: Solve for x
    x = 195,088,634,982.20/430,821.89
  6. Step 6: Final answer
    x = 452,828.98

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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.