Home / 479,075.12-660,956.70-307,087.92

Finding the Fourth Proportional to 479,075.12, 660,956.70 and 307,087.92

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Solution

The fourth proportional to 479,075.12, 660,956.70 and 307,087.92 is: 423,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,075.12 : 660,956.70 = 307,087.92 : x
  2. Step 2: Convert to fraction form
    479,075.12/660,956.70 = 307,087.92/x
  3. Step 3: Cross multiply
    479,075.12x = 660,956.70 × 307,087.92
  4. Step 4: Simplify right side
    479,075.12x = 202,971,815,895.58
  5. Step 5: Solve for x
    x = 202,971,815,895.58/479,075.12
  6. Step 6: Final answer
    x = 423,674.30

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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.