Home / 918,865.26-1,378,297.08-287,828.28

Finding the Fourth Proportional to 918,865.26, 1,378,297.08 and 287,828.28

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Solution

The fourth proportional to 918,865.26, 1,378,297.08 and 287,828.28 is: 431,742.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,865.26 : 1,378,297.08 = 287,828.28 : x
  2. Step 2: Convert to fraction form
    918,865.26/1,378,297.08 = 287,828.28/x
  3. Step 3: Cross multiply
    918,865.26x = 1,378,297.08 × 287,828.28
  4. Step 4: Simplify right side
    918,865.26x = 396,712,877,865.42
  5. Step 5: Solve for x
    x = 396,712,877,865.42/918,865.26
  6. Step 6: Final answer
    x = 431,742.17

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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.