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Finding the Fourth Proportional to 630,989.46, 870,784.68 and 359,096.46

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Solution

The fourth proportional to 630,989.46, 870,784.68 and 359,096.46 is: 495,564.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,989.46 : 870,784.68 = 359,096.46 : x
  2. Step 2: Convert to fraction form
    630,989.46/870,784.68 = 359,096.46/x
  3. Step 3: Cross multiply
    630,989.46x = 870,784.68 × 359,096.46
  4. Step 4: Simplify right side
    630,989.46x = 312,695,696,010.23
  5. Step 5: Solve for x
    x = 312,695,696,010.23/630,989.46
  6. Step 6: Final answer
    x = 495,564.06

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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.