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Finding the Fourth Proportional to 630,653.50, 870,320.28 and 344,191.96

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Solution

The fourth proportional to 630,653.50, 870,320.28 and 344,191.96 is: 474,994.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,653.50 : 870,320.28 = 344,191.96 : x
  2. Step 2: Convert to fraction form
    630,653.50/870,320.28 = 344,191.96/x
  3. Step 3: Cross multiply
    630,653.50x = 870,320.28 × 344,191.96
  4. Step 4: Simplify right side
    630,653.50x = 299,557,243,000.95
  5. Step 5: Solve for x
    x = 299,557,243,000.95/630,653.50
  6. Step 6: Final answer
    x = 474,994.97

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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.