Home / 1,310,145.88-1,808,710.96-918,880.42

Finding the Fourth Proportional to 1,310,145.88, 1,808,710.96 and 918,880.42

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Solution

The fourth proportional to 1,310,145.88, 1,808,710.96 and 918,880.42 is: 1,268,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,145.88 : 1,808,710.96 = 918,880.42 : x
  2. Step 2: Convert to fraction form
    1,310,145.88/1,808,710.96 = 918,880.42/x
  3. Step 3: Cross multiply
    1,310,145.88x = 1,808,710.96 × 918,880.42
  4. Step 4: Simplify right side
    1,310,145.88x = 1,661,989,086,583.40
  5. Step 5: Solve for x
    x = 1,661,989,086,583.40/1,310,145.88
  6. Step 6: Final answer
    x = 1,268,552.69

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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.