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Finding the Fourth Proportional to 630,798.12, 870,371.46 and 362,474.28

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Solution

The fourth proportional to 630,798.12, 870,371.46 and 362,474.28 is: 500,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,798.12 : 870,371.46 = 362,474.28 : x
  2. Step 2: Convert to fraction form
    630,798.12/870,371.46 = 362,474.28/x
  3. Step 3: Cross multiply
    630,798.12x = 870,371.46 × 362,474.28
  4. Step 4: Simplify right side
    630,798.12x = 315,487,268,296.05
  5. Step 5: Solve for x
    x = 315,487,268,296.05/630,798.12
  6. Step 6: Final answer
    x = 500,139.84

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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.