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Finding the Fourth Proportional to 630,967.61, 870,730.74 and 344,487.69

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Solution

The fourth proportional to 630,967.61, 870,730.74 and 344,487.69 is: 475,390.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,967.61 : 870,730.74 = 344,487.69 : x
  2. Step 2: Convert to fraction form
    630,967.61/870,730.74 = 344,487.69/x
  3. Step 3: Cross multiply
    630,967.61x = 870,730.74 × 344,487.69
  4. Step 4: Simplify right side
    630,967.61x = 299,956,021,234.59
  5. Step 5: Solve for x
    x = 299,956,021,234.59/630,967.61
  6. Step 6: Final answer
    x = 475,390.53

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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.