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Finding the Fourth Proportional to 630,749.28, 870,546.88 and 376,116.88

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Solution

The fourth proportional to 630,749.28, 870,546.88 and 376,116.88 is: 519,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,749.28 : 870,546.88 = 376,116.88 : x
  2. Step 2: Convert to fraction form
    630,749.28/870,546.88 = 376,116.88/x
  3. Step 3: Cross multiply
    630,749.28x = 870,546.88 × 376,116.88
  4. Step 4: Simplify right side
    630,749.28x = 327,427,376,399.33
  5. Step 5: Solve for x
    x = 327,427,376,399.33/630,749.28
  6. Step 6: Final answer
    x = 519,108.60

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1.5x scale

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.