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Finding the Fourth Proportional to 630,673.16, 870,316.79 and 344,195.28

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Solution

The fourth proportional to 630,673.16, 870,316.79 and 344,195.28 is: 474,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,673.16 : 870,316.79 = 344,195.28 : x
  2. Step 2: Convert to fraction form
    630,673.16/870,316.79 = 344,195.28/x
  3. Step 3: Cross multiply
    630,673.16x = 870,316.79 × 344,195.28
  4. Step 4: Simplify right side
    630,673.16x = 299,558,929,501.78
  5. Step 5: Solve for x
    x = 299,558,929,501.78/630,673.16
  6. Step 6: Final answer
    x = 474,982.85

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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.