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Finding the Fourth Proportional to 530,930.66, 796,512.51 and 390,262.82

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Solution

The fourth proportional to 530,930.66, 796,512.51 and 390,262.82 is: 585,479.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,930.66 : 796,512.51 = 390,262.82 : x
  2. Step 2: Convert to fraction form
    530,930.66/796,512.51 = 390,262.82/x
  3. Step 3: Cross multiply
    530,930.66x = 796,512.51 × 390,262.82
  4. Step 4: Simplify right side
    530,930.66x = 310,849,218,317.88
  5. Step 5: Solve for x
    x = 310,849,218,317.88/530,930.66
  6. Step 6: Final answer
    x = 585,479.88

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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.