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Finding the Fourth Proportional to 630,506.64, 870,074.08 and 372,466.45

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Solution

The fourth proportional to 630,506.64, 870,074.08 and 372,466.45 is: 513,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,506.64 : 870,074.08 = 372,466.45 : x
  2. Step 2: Convert to fraction form
    630,506.64/870,074.08 = 372,466.45/x
  3. Step 3: Cross multiply
    630,506.64x = 870,074.08 × 372,466.45
  4. Step 4: Simplify right side
    630,506.64x = 324,073,399,464.25
  5. Step 5: Solve for x
    x = 324,073,399,464.25/630,506.64
  6. Step 6: Final answer
    x = 513,988.88

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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.