Home / 427,587.03-641,278.44-127,987.20

Finding the Fourth Proportional to 427,587.03, 641,278.44 and 127,987.20

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Solution

The fourth proportional to 427,587.03, 641,278.44 and 127,987.20 is: 191,950.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,587.03 : 641,278.44 = 127,987.20 : x
  2. Step 2: Convert to fraction form
    427,587.03/641,278.44 = 127,987.20/x
  3. Step 3: Cross multiply
    427,587.03x = 641,278.44 × 127,987.20
  4. Step 4: Simplify right side
    427,587.03x = 82,075,431,955.97
  5. Step 5: Solve for x
    x = 82,075,431,955.97/427,587.03
  6. Step 6: Final answer
    x = 191,950.24

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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.