Home / 1,131,120.08-1,697,457.80-421,715.60

Finding the Fourth Proportional to 1,131,120.08, 1,697,457.80 and 421,715.60

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Solution

The fourth proportional to 1,131,120.08, 1,697,457.80 and 421,715.60 is: 632,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,120.08 : 1,697,457.80 = 421,715.60 : x
  2. Step 2: Convert to fraction form
    1,131,120.08/1,697,457.80 = 421,715.60/x
  3. Step 3: Cross multiply
    1,131,120.08x = 1,697,457.80 × 421,715.60
  4. Step 4: Simplify right side
    1,131,120.08x = 715,844,434,601.68
  5. Step 5: Solve for x
    x = 715,844,434,601.68/1,131,120.08
  6. Step 6: Final answer
    x = 632,863.34

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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.