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Finding the Fourth Proportional to 630,539.10, 870,143.94 and 404,184.60

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Solution

The fourth proportional to 630,539.10, 870,143.94 and 404,184.60 is: 557,774.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,539.10 : 870,143.94 = 404,184.60 : x
  2. Step 2: Convert to fraction form
    630,539.10/870,143.94 = 404,184.60/x
  3. Step 3: Cross multiply
    630,539.10x = 870,143.94 × 404,184.60
  4. Step 4: Simplify right side
    630,539.10x = 351,698,780,331.32
  5. Step 5: Solve for x
    x = 351,698,780,331.32/630,539.10
  6. Step 6: Final answer
    x = 557,774.74

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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.