Home / 918,718.20-1,267,834.68-510,857.28

Finding the Fourth Proportional to 918,718.20, 1,267,834.68 and 510,857.28

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Solution

The fourth proportional to 918,718.20, 1,267,834.68 and 510,857.28 is: 704,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,718.20 : 1,267,834.68 = 510,857.28 : x
  2. Step 2: Convert to fraction form
    918,718.20/1,267,834.68 = 510,857.28/x
  3. Step 3: Cross multiply
    918,718.20x = 1,267,834.68 × 510,857.28
  4. Step 4: Simplify right side
    918,718.20x = 647,682,576,114.47
  5. Step 5: Solve for x
    x = 647,682,576,114.47/918,718.20
  6. Step 6: Final answer
    x = 704,985.03

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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.