Home / 1,008,128.04-1,391,215.92-555,419.04

Finding the Fourth Proportional to 1,008,128.04, 1,391,215.92 and 555,419.04

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Solution

The fourth proportional to 1,008,128.04, 1,391,215.92 and 555,419.04 is: 766,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,128.04 : 1,391,215.92 = 555,419.04 : x
  2. Step 2: Convert to fraction form
    1,008,128.04/1,391,215.92 = 555,419.04/x
  3. Step 3: Cross multiply
    1,008,128.04x = 1,391,215.92 × 555,419.04
  4. Step 4: Simplify right side
    1,008,128.04x = 772,707,810,719.12
  5. Step 5: Solve for x
    x = 772,707,810,719.12/1,008,128.04
  6. Step 6: Final answer
    x = 766,477.85

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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.