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Finding the Fourth Proportional to 630,669.59, 870,209.44 and 372,588.56

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Solution

The fourth proportional to 630,669.59, 870,209.44 and 372,588.56 is: 514,104.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,669.59 : 870,209.44 = 372,588.56 : x
  2. Step 2: Convert to fraction form
    630,669.59/870,209.44 = 372,588.56/x
  3. Step 3: Cross multiply
    630,669.59x = 870,209.44 × 372,588.56
  4. Step 4: Simplify right side
    630,669.59x = 324,230,082,224.58
  5. Step 5: Solve for x
    x = 324,230,082,224.58/630,669.59
  6. Step 6: Final answer
    x = 514,104.51

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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.