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Finding the Fourth Proportional to 630,893.04, 870,631.55 and 404,538

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Solution

The fourth proportional to 630,893.04, 870,631.55 and 404,538 is: 558,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,893.04 : 870,631.55 = 404,538 : x
  2. Step 2: Convert to fraction form
    630,893.04/870,631.55 = 404,538/x
  3. Step 3: Cross multiply
    630,893.04x = 870,631.55 × 404,538
  4. Step 4: Simplify right side
    630,893.04x = 352,203,543,951.21
  5. Step 5: Solve for x
    x = 352,203,543,951.21/630,893.04
  6. Step 6: Final answer
    x = 558,261.89

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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.