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Finding the Fourth Proportional to 630,887.04, 870,623.28 and 404,532

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Solution

The fourth proportional to 630,887.04, 870,623.28 and 404,532 is: 558,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,887.04 : 870,623.28 = 404,532 : x
  2. Step 2: Convert to fraction form
    630,887.04/870,623.28 = 404,532/x
  3. Step 3: Cross multiply
    630,887.04x = 870,623.28 × 404,532
  4. Step 4: Simplify right side
    630,887.04x = 352,194,976,704.96
  5. Step 5: Solve for x
    x = 352,194,976,704.96/630,887.04
  6. Step 6: Final answer
    x = 558,253.62

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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.