Home / 918,917.21-1,267,919.92-536,870.18

Finding the Fourth Proportional to 918,917.21, 1,267,919.92 and 536,870.18

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Solution

The fourth proportional to 918,917.21, 1,267,919.92 and 536,870.18 is: 740,772.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,917.21 : 1,267,919.92 = 536,870.18 : x
  2. Step 2: Convert to fraction form
    918,917.21/1,267,919.92 = 536,870.18/x
  3. Step 3: Cross multiply
    918,917.21x = 1,267,919.92 × 536,870.18
  4. Step 4: Simplify right side
    918,917.21x = 680,708,395,675.99
  5. Step 5: Solve for x
    x = 680,708,395,675.99/918,917.21
  6. Step 6: Final answer
    x = 740,772.28

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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.