Home / 495,815.72-684,555.18-380,889.68

Finding the Fourth Proportional to 495,815.72, 684,555.18 and 380,889.68

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Solution

The fourth proportional to 495,815.72, 684,555.18 and 380,889.68 is: 525,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,815.72 : 684,555.18 = 380,889.68 : x
  2. Step 2: Convert to fraction form
    495,815.72/684,555.18 = 380,889.68/x
  3. Step 3: Cross multiply
    495,815.72x = 684,555.18 × 380,889.68
  4. Step 4: Simplify right side
    495,815.72x = 260,740,003,452.54
  5. Step 5: Solve for x
    x = 260,740,003,452.54/495,815.72
  6. Step 6: Final answer
    x = 525,880.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.