Home / 1,605,373.69-2,215,515.23-889,981.69

Finding the Fourth Proportional to 1,605,373.69, 2,215,515.23 and 889,981.69

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Solution

The fourth proportional to 1,605,373.69, 2,215,515.23 and 889,981.69 is: 1,228,229.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605,373.69 : 2,215,515.23 = 889,981.69 : x
  2. Step 2: Convert to fraction form
    1,605,373.69/2,215,515.23 = 889,981.69/x
  3. Step 3: Cross multiply
    1,605,373.69x = 2,215,515.23 × 889,981.69
  4. Step 4: Simplify right side
    1,605,373.69x = 1,971,767,988,616.14
  5. Step 5: Solve for x
    x = 1,971,767,988,616.14/1,605,373.69
  6. Step 6: Final answer
    x = 1,228,229.91

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1.5x scale

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.