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Finding the Fourth Proportional to 630,971.48, 870,728.82 and 359,033.24

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Solution

The fourth proportional to 630,971.48, 870,728.82 and 359,033.24 is: 495,459.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,971.48 : 870,728.82 = 359,033.24 : x
  2. Step 2: Convert to fraction form
    630,971.48/870,728.82 = 359,033.24/x
  3. Step 3: Cross multiply
    630,971.48x = 870,728.82 × 359,033.24
  4. Step 4: Simplify right side
    630,971.48x = 312,620,589,405.98
  5. Step 5: Solve for x
    x = 312,620,589,405.98/630,971.48
  6. Step 6: Final answer
    x = 495,459.14

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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.