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Finding the Fourth Proportional to 630,103.52, 869,610.32 and 385,231.96

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Solution

The fourth proportional to 630,103.52, 869,610.32 and 385,231.96 is: 531,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,103.52 : 869,610.32 = 385,231.96 : x
  2. Step 2: Convert to fraction form
    630,103.52/869,610.32 = 385,231.96/x
  3. Step 3: Cross multiply
    630,103.52x = 869,610.32 × 385,231.96
  4. Step 4: Simplify right side
    630,103.52x = 335,001,688,009.83
  5. Step 5: Solve for x
    x = 335,001,688,009.83/630,103.52
  6. Step 6: Final answer
    x = 531,661.35

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1.5x scale

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.