Home / 1,309,126.48-1,806,605.08-728,358.16

Finding the Fourth Proportional to 1,309,126.48, 1,806,605.08 and 728,358.16

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Solution

The fourth proportional to 1,309,126.48, 1,806,605.08 and 728,358.16 is: 1,005,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,126.48 : 1,806,605.08 = 728,358.16 : x
  2. Step 2: Convert to fraction form
    1,309,126.48/1,806,605.08 = 728,358.16/x
  3. Step 3: Cross multiply
    1,309,126.48x = 1,806,605.08 × 728,358.16
  4. Step 4: Simplify right side
    1,309,126.48x = 1,315,855,551,915.45
  5. Step 5: Solve for x
    x = 1,315,855,551,915.45/1,309,126.48
  6. Step 6: Final answer
    x = 1,005,140.12

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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.