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Finding the Fourth Proportional to 630,547.90, 870,177.11 and 344,083.70

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Solution

The fourth proportional to 630,547.90, 870,177.11 and 344,083.70 is: 474,846.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,547.90 : 870,177.11 = 344,083.70 : x
  2. Step 2: Convert to fraction form
    630,547.90/870,177.11 = 344,083.70/x
  3. Step 3: Cross multiply
    630,547.90x = 870,177.11 × 344,083.70
  4. Step 4: Simplify right side
    630,547.90x = 299,413,760,119.13
  5. Step 5: Solve for x
    x = 299,413,760,119.13/630,547.90
  6. Step 6: Final answer
    x = 474,846.97

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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.