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Finding the Fourth Proportional to 630,542.57, 870,169.73 and 344,078.37

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Solution

The fourth proportional to 630,542.57, 870,169.73 and 344,078.37 is: 474,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,542.57 : 870,169.73 = 344,078.37 : x
  2. Step 2: Convert to fraction form
    630,542.57/870,169.73 = 344,078.37/x
  3. Step 3: Cross multiply
    630,542.57x = 870,169.73 × 344,078.37
  4. Step 4: Simplify right side
    630,542.57x = 299,406,580,601.35
  5. Step 5: Solve for x
    x = 299,406,580,601.35/630,542.57
  6. Step 6: Final answer
    x = 474,839.60

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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.