Home / 612,455.92-917,748.32-257,275.76

Finding the Fourth Proportional to 612,455.92, 917,748.32 and 257,275.76

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Solution

The fourth proportional to 612,455.92, 917,748.32 and 257,275.76 is: 385,520.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,455.92 : 917,748.32 = 257,275.76 : x
  2. Step 2: Convert to fraction form
    612,455.92/917,748.32 = 257,275.76/x
  3. Step 3: Cross multiply
    612,455.92x = 917,748.32 × 257,275.76
  4. Step 4: Simplify right side
    612,455.92x = 236,114,396,516.72
  5. Step 5: Solve for x
    x = 236,114,396,516.72/612,455.92
  6. Step 6: Final answer
    x = 385,520.64

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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.