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Finding the Fourth Proportional to 999,528, 1,499,290.81 and 325,608.21

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Solution

The fourth proportional to 999,528, 1,499,290.81 and 325,608.21 is: 488,411.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,528 : 1,499,290.81 = 325,608.21 : x
  2. Step 2: Convert to fraction form
    999,528/1,499,290.81 = 325,608.21/x
  3. Step 3: Cross multiply
    999,528x = 1,499,290.81 × 325,608.21
  4. Step 4: Simplify right side
    999,528x = 488,181,396,913.55
  5. Step 5: Solve for x
    x = 488,181,396,913.55/999,528
  6. Step 6: Final answer
    x = 488,411.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.