Home / 430,817.20-644,425.81-302,724.51

Finding the Fourth Proportional to 430,817.20, 644,425.81 and 302,724.51

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Solution

The fourth proportional to 430,817.20, 644,425.81 and 302,724.51 is: 452,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,817.20 : 644,425.81 = 302,724.51 : x
  2. Step 2: Convert to fraction form
    430,817.20/644,425.81 = 302,724.51/x
  3. Step 3: Cross multiply
    430,817.20x = 644,425.81 × 302,724.51
  4. Step 4: Simplify right side
    430,817.20x = 195,083,484,390.20
  5. Step 5: Solve for x
    x = 195,083,484,390.20/430,817.20
  6. Step 6: Final answer
    x = 452,821.95

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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.