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Finding the Fourth Proportional to 665,590.52, 997,369.85 and 395,186.18

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Solution

The fourth proportional to 665,590.52, 997,369.85 and 395,186.18 is: 592,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,590.52 : 997,369.85 = 395,186.18 : x
  2. Step 2: Convert to fraction form
    665,590.52/997,369.85 = 395,186.18/x
  3. Step 3: Cross multiply
    665,590.52x = 997,369.85 × 395,186.18
  4. Step 4: Simplify right side
    665,590.52x = 394,146,781,303.91
  5. Step 5: Solve for x
    x = 394,146,781,303.91/665,590.52
  6. Step 6: Final answer
    x = 592,176.07

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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.