Home / 918,867.26-1,378,300.08-287,830.28

Finding the Fourth Proportional to 918,867.26, 1,378,300.08 and 287,830.28

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Solution

The fourth proportional to 918,867.26, 1,378,300.08 and 287,830.28 is: 431,745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,867.26 : 1,378,300.08 = 287,830.28 : x
  2. Step 2: Convert to fraction form
    918,867.26/1,378,300.08 = 287,830.28/x
  3. Step 3: Cross multiply
    918,867.26x = 1,378,300.08 × 287,830.28
  4. Step 4: Simplify right side
    918,867.26x = 396,716,497,950.42
  5. Step 5: Solve for x
    x = 396,716,497,950.42/918,867.26
  6. Step 6: Final answer
    x = 431,745.17

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1.5x scale

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.