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Finding the Fourth Proportional to 1,309,541.55, 1,807,149.20 and 736,582.11

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Solution

The fourth proportional to 1,309,541.55, 1,807,149.20 and 736,582.11 is: 1,016,473.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,541.55 : 1,807,149.20 = 736,582.11 : x
  2. Step 2: Convert to fraction form
    1,309,541.55/1,807,149.20 = 736,582.11/x
  3. Step 3: Cross multiply
    1,309,541.55x = 1,807,149.20 × 736,582.11
  4. Step 4: Simplify right side
    1,309,541.55x = 1,331,113,767,137.90
  5. Step 5: Solve for x
    x = 1,331,113,767,137.90/1,309,541.55
  6. Step 6: Final answer
    x = 1,016,473.11

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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.