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Finding the Fourth Proportional to 986,689.89, 1,361,632.03 and 533,980.89

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Solution

The fourth proportional to 986,689.89, 1,361,632.03 and 533,980.89 is: 736,893.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,689.89 : 1,361,632.03 = 533,980.89 : x
  2. Step 2: Convert to fraction form
    986,689.89/1,361,632.03 = 533,980.89/x
  3. Step 3: Cross multiply
    986,689.89x = 1,361,632.03 × 533,980.89
  4. Step 4: Simplify right side
    986,689.89x = 727,085,483,231.91
  5. Step 5: Solve for x
    x = 727,085,483,231.91/986,689.89
  6. Step 6: Final answer
    x = 736,893.62

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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.