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Finding the Fourth Proportional to 630,836.61, 870,537.78 and 580,054.47

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Solution

The fourth proportional to 630,836.61, 870,537.78 and 580,054.47 is: 800,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,836.61 : 870,537.78 = 580,054.47 : x
  2. Step 2: Convert to fraction form
    630,836.61/870,537.78 = 580,054.47/x
  3. Step 3: Cross multiply
    630,836.61x = 870,537.78 × 580,054.47
  4. Step 4: Simplify right side
    630,836.61x = 504,959,330,592.88
  5. Step 5: Solve for x
    x = 504,959,330,592.88/630,836.61
  6. Step 6: Final answer
    x = 800,459.77

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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.