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Finding the Fourth Proportional to 630,682.48, 870,039.09 and 412,795.23

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Solution

The fourth proportional to 630,682.48, 870,039.09 and 412,795.23 is: 569,459.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,682.48 : 870,039.09 = 412,795.23 : x
  2. Step 2: Convert to fraction form
    630,682.48/870,039.09 = 412,795.23/x
  3. Step 3: Cross multiply
    630,682.48x = 870,039.09 × 412,795.23
  4. Step 4: Simplify right side
    630,682.48x = 359,147,986,265.54
  5. Step 5: Solve for x
    x = 359,147,986,265.54/630,682.48
  6. Step 6: Final answer
    x = 569,459.27

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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.