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Finding the Fourth Proportional to 630,766.63, 870,424.95 and 344,281.78

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Solution

The fourth proportional to 630,766.63, 870,424.95 and 344,281.78 is: 475,090.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,766.63 : 870,424.95 = 344,281.78 : x
  2. Step 2: Convert to fraction form
    630,766.63/870,424.95 = 344,281.78/x
  3. Step 3: Cross multiply
    630,766.63x = 870,424.95 × 344,281.78
  4. Step 4: Simplify right side
    630,766.63x = 299,671,451,142.41
  5. Step 5: Solve for x
    x = 299,671,451,142.41/630,766.63
  6. Step 6: Final answer
    x = 475,090.84

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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.