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Finding the Fourth Proportional to 630,481.34, 870,055.27 and 343,995.68

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Solution

The fourth proportional to 630,481.34, 870,055.27 and 343,995.68 is: 474,709.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,481.34 : 870,055.27 = 343,995.68 : x
  2. Step 2: Convert to fraction form
    630,481.34/870,055.27 = 343,995.68/x
  3. Step 3: Cross multiply
    630,481.34x = 870,055.27 × 343,995.68
  4. Step 4: Simplify right side
    630,481.34x = 299,295,249,030.97
  5. Step 5: Solve for x
    x = 299,295,249,030.97/630,481.34
  6. Step 6: Final answer
    x = 474,709.13

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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.