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Finding the Fourth Proportional to 495,518.16, 682,564.68 and 399,756.72

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Solution

The fourth proportional to 495,518.16, 682,564.68 and 399,756.72 is: 550,655.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,518.16 : 682,564.68 = 399,756.72 : x
  2. Step 2: Convert to fraction form
    495,518.16/682,564.68 = 399,756.72/x
  3. Step 3: Cross multiply
    495,518.16x = 682,564.68 × 399,756.72
  4. Step 4: Simplify right side
    495,518.16x = 272,859,817,664.65
  5. Step 5: Solve for x
    x = 272,859,817,664.65/495,518.16
  6. Step 6: Final answer
    x = 550,655.54

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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.