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Finding the Fourth Proportional to 867,010.20, 1,300,515.30 and 762,034.20

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Solution

The fourth proportional to 867,010.20, 1,300,515.30 and 762,034.20 is: 1,143,051.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,010.20 : 1,300,515.30 = 762,034.20 : x
  2. Step 2: Convert to fraction form
    867,010.20/1,300,515.30 = 762,034.20/x
  3. Step 3: Cross multiply
    867,010.20x = 1,300,515.30 × 762,034.20
  4. Step 4: Simplify right side
    867,010.20x = 991,037,136,223.26
  5. Step 5: Solve for x
    x = 991,037,136,223.26/867,010.20
  6. Step 6: Final answer
    x = 1,143,051.30

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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.