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Finding the Fourth Proportional to 530,930.16, 796,511.76 and 390,262.32

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Solution

The fourth proportional to 530,930.16, 796,511.76 and 390,262.32 is: 585,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,930.16 : 796,511.76 = 390,262.32 : x
  2. Step 2: Convert to fraction form
    530,930.16/796,511.76 = 390,262.32/x
  3. Step 3: Cross multiply
    530,930.16x = 796,511.76 × 390,262.32
  4. Step 4: Simplify right side
    530,930.16x = 310,848,527,364.88
  5. Step 5: Solve for x
    x = 310,848,527,364.88/530,930.16
  6. Step 6: Final answer
    x = 585,479.13

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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.