Home / 430,815.87-644,815.08-316,933.29

Finding the Fourth Proportional to 430,815.87, 644,815.08 and 316,933.29

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Solution

The fourth proportional to 430,815.87, 644,815.08 and 316,933.29 is: 474,363.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,815.87 : 644,815.08 = 316,933.29 : x
  2. Step 2: Convert to fraction form
    430,815.87/644,815.08 = 316,933.29/x
  3. Step 3: Cross multiply
    430,815.87x = 644,815.08 × 316,933.29
  4. Step 4: Simplify right side
    430,815.87x = 204,363,364,746.01
  5. Step 5: Solve for x
    x = 204,363,364,746.01/430,815.87
  6. Step 6: Final answer
    x = 474,363.59

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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.